According to the versions of the httpd packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker     to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or     mod_dav_fs._x000D_
    _x000D_     The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version     1.2.0._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove     mod_dav_lock.(CVE-2026-29169)

    HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised     backend servers._x000D_
    _x000D_     This issue affects Apache HTTP Server: from through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33523)

    A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an     unauthenticated remote user to crash a child process in a caching forward proxy configuration._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33007)

    Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's   mod_md via     OCSP response data._x000D_
    _x000D_     This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

    Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server._x000D_     If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back     to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based     buffer._x000D_
    _x000D_     This issue affects Apache HTTP Server: through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

    An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess     authors to read files with the privileges of the httpd user._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

    A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest     authentication by a remote attacker._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

    Buffer Over-read vulnerability in Apache HTTP Server._x000D_
    _x000D_     This issue affects Apache HTTP Server: through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

    Out-of-bounds Read vulnerability in mod_proxy_ajp of _x000D_
    _x000D_     Apache HTTP Server._x000D_
    _x000D_     This issue affects Apache HTTP Server: through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33857)

    Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server._x000D_
    _x000D_     This issue affects Apache HTTP Server: through 2.4.66._x000D_
    _x000D_     Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34032)

Tenable has extracted the preceding description block directly from the EulerOS httpd security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the httpd package has been released.

The version of httpd installed on the remote host is prior to 2.4.67. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-124-01 advisory.

    New httpd packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the httpd security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the httpd packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34032)

    Out-of-bounds Read vulnerability in mod_proxy_ajp of

    Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33857)

    Buffer Over-read vulnerability in Apache HTTP Server.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

    HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised     backend servers.

    This issue affects Apache HTTP Server: from through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33523)

    Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.
    If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back     to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.

    This issue affects Apache HTTP Server: through 2.4.66.

    Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-28780)

    A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker     to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

    The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version     1.2.0.

    Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove     mod_dav_lock.(CVE-2026-29169)

    A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest     authentication by a remote attacker.

    Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33006)

    Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP     response data. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66. Users are recommended to     upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

    A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an     unauthenticated remote user to crash a child process in a caching forward proxy configuration.

    Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33007)

    An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess     authors to read files with the privileges of the httpd user.

    Users are recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-24072)

Tenable has extracted the preceding description block directly from the EulerOS httpd security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8239-1 advisory.

    Bartlomiej Dmitruk and Stanislaw Strzalkowski discovered that Apache HTTP Server incorrectly handled     certain memory operations when using the HTTP/2 protocol. A remote attacker could use this issue to cause     Apache HTTP Server to crash, resulting in a denial of service, or possibly execute arbitrary code. This     issue only affected Ubuntu 26.04 LTS. (CVE-2026-23918)

    It was discovered that the Apache HTTP Server mod_rewrite module incorrectly handled certain privileges. A     local attacker could possibly use this issue to obtain sensitive information. (CVE-2026-24072)

    Andrew Lacambra, Elhanan Haenel, Tianshuo Han, and Tristan Madani discovered that the Apache HTTP Server     mod_proxy_ajp module incorrectly handled certain AJP server messages. An attacker in control of a backend     AJP server could use this issue to cause Apache HTTP Server to crash, resulting in a denial of service, or     possibly execute arbitrary code. (CVE-2026-28780)

    Pavel Kohout discovered that Apache HTTP Server did not properly limit resource allocation in mod_md when     processing OCSP response data. A remote attacker could possibly use this issue to cause a denial of     service. (CVE-2026-29168)

    Pavel Kohout discovered that the Apache HTTP Server incorrectly handled certain memory operations in     mod_dav_lock. A remote attacker could possibly use this issue to cause Apache HTTP Server to crash,     resulting in a denial of service. (CVE-2026-29169)

    Nitescu Lucian discovered that Apache HTTP Server had a timing attack vulnerability in mod_auth_digest. A     remote attacker could possibly use this issue to bypass Digest authentication. (CVE-2026-33006)

    Pavel Kohout and Arkadi Vainbrand discovered that Apache HTTP Server incorrectly handled certain memory     operations in mod_authn_socache. A remote attacker could possibly use this issue to cause Apache HTTP     Server to crash, resulting in a denial of service. (CVE-2026-33007)

    Haruki Oyama, Merih Mengisteab, and Dawit Jeong discovered that Apache HTTP Server had an HTTP response     splitting vulnerability in multiple modules when used with untrusted or compromised backend servers. An     attacker could possibly use this issue to inject arbitrary HTTP headers. (CVE-2026-33523)

    Elhanan Haenel discovered that Apache HTTP Server incorrectly handled certain memory operations in     mod_proxy_ajp. A remote attacker could possibly use this issue to cause Apache HTTP Server to crash,     resulting in a denial of service. (CVE-2026-33857)

    Tianshuo Han and Jrme Djouder discovered that Apache HTTP Server incorrectly handled certain string     operations in mod_proxy_ajp. A remote attacker could possibly use this issue to obtain sensitive     information. (CVE-2026-34032)

    Elhanan Haenel discovered that Apache HTTP Server incorrectly handled certain memory operations in     mod_proxy_ajp. A remote attacker could use this issue to cause Apache HTTP Server to crash, resulting in a     denial of service, or possibly obtain sensitive information. (CVE-2026-34059)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2104-1 advisory.

    This update for apache2 fixes the following issues

    - CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
    - CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
    - CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via `ajp_msg_check_header()` (bsc#1264163).
    - CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP response (bsc#1264150).
    - CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server crash via malicious requests     (bsc#1263956).
    - CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest authentication (bsc#1263955).
    - CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows unauthenticated remote user to     crash a child       processes (bsc#1263954).
    - CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
    - CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
    - CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-termination check     (bsc#1263951).
    - CVE-2026-34059: heap buffer overread and memory disclosure via `ajp_parse_data()` (bsc#1263950).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36846 advisory.

    The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

    Security Fix(es):

    * httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase (CVE-2025-53020)

    * httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()     (CVE-2026-34059)

    * httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032)

    * httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)

    * httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash (CVE-2026-33007)

    * Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-     based buffer overflow (CVE-2026-28780)

    * httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22209-1 advisory.

    This update for apache2 fixes the following issues

    - CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
    - CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
    - CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via `ajp_msg_check_header()` (bsc#1264163).
    - CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP response (bsc#1264150).
    - CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server crash via malicious requests     (bsc#1263956).
    - CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest authentication (bsc#1263955).
    - CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows unauthenticated remote user to     crash a child       processes (bsc#1263954).
    - CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
    - CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
    - CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-termination check     (bsc#1263951).
    - CVE-2026-34059: heap buffer overread and memory disclosure via `ajp_parse_data()` (bsc#1263950).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-21433 advisory.

    - Resolves: RHEL-186221 - httpd: Apache HTTP Server: Heap-based Buffer Overflow       via malicious backend servers (CVE-2026-34356)
    - Resolves: RHEL-186195 - httpd: Apache HTTP Server: Heap-based Buffer Overflow       via untrusted content in mod_xml2enc (CVE-2026-42536)
    - Resolves: RHEL-186182 - httpd: Apache HTTP Server: Buffer overflow in       mod_proxy_html allows security bypass (CVE-2026-34355)
    - Resolves: RHEL-186158 - httpd: Apache HTTP Server: Buffer Over-read via       outbound OCSP requests to attacker-controlled server (CVE-2026-44185)
    - Resolves: RHEL-184305 - httpd: Apache HTTP Server: Denial of Service via       crafted regular expressions (CVE-2026-44631)
    - Resolves : RHEL-182581 - httpd: incomplete fix for       CVE-2023-38709 (CVE-2024-42516)
    - Resolves: RHEL-175621 - httpd: NULL pointer dereference via specially crafted       request (CVE-2026-29169)
    - Also addresses CVE-2026-44119, CVE-2026-44186, CVE-2026-42535,       CVE-2026-24072, CVE-2026-33006, CVE-2026-43951
    - Resolves: RHEL-173549 - httpd: Apache HTTP Server mod_proxy_ajp: Arbitrary       code execution via heap-based buffer overflow (CVE-2026-28780)
    - Resolves: RHEL-175065 - httpd: NULL pointer dereference can cause a child       process crash (CVE-2026-33007)
    - Resolves: RHEL-175095 - httpd: off-by-one out-of-bounds reads in AJP getter       functions (CVE-2026-33857)
    - Resolves: RHEL-175039 - httpd: heap-based buffer over-read due to missing       null-termination check (CVE-2026-34032)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:62165 advisory.

    The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

    Security Fix(es):

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

    * httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()     (CVE-2026-34059)

    * httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032)

    * httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)

    * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

    * httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash (CVE-2026-33007)

    * Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-     based buffer overflow (CVE-2026-28780)

    * httpd: Apache HTTP Server: Arbitrary code execution or denial of service via use-after-free in mod_ldap     per-directory configuration (CVE-2026-29167)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

    * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)

    * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

    * httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server     (CVE-2026-44186)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)

    * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

    * httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
332927	EulerOS 2.0 SP15 : httpd (EulerOS-SA-2026-2888)	Nessus	Huawei Local Security Checks	8/6/2026	8/6/2026	high
314419	Photon OS 5.0: Httpd PHSA-2026-5.0-0848	Nessus	PhotonOS Local Security Checks	5/13/2026	6/27/2026	critical
312108	Slackware Linux 15.0 / current httpd Multiple Vulnerabilities (SSA:2026-124-01)	Nessus	Slackware Local Security Checks	5/4/2026	5/7/2026	critical
333447	EulerOS 2.0 SP11 : httpd (EulerOS-SA-2026-3070)	Nessus	Huawei Local Security Checks	8/8/2026	8/8/2026	high
333454	EulerOS 2.0 SP11 : httpd (EulerOS-SA-2026-3125)	Nessus	Huawei Local Security Checks	8/8/2026	8/8/2026	high
313207	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Apache HTTP Server vulnerabilities (USN-8239-1)	Nessus	Ubuntu Local Security Checks	5/8/2026	5/8/2026	critical
317663	SUSE SLED15 / SLES15 Security Update : apache2 (SUSE-SU-2026:2104-1)	Nessus	SuSE Local Security Checks	5/29/2026	5/29/2026	critical
325802	RHEL 8 : httpd:2.4 (RHSA-2026:36846)	Nessus	Red Hat Local Security Checks	7/9/2026	7/9/2026	high
322903	SUSE SLES16: apache2 / apache2-devel / apache2-event / apache2-manual / etc (SUSE-SU-2026:22209-1)	Nessus	SuSE Local Security Checks	6/26/2026	7/2/2026	high
327724	Oracle Linux 10 : httpd (ELSA-2026-21433)	Nessus	Oracle Linux Local Security Checks	7/18/2026	7/18/2026	high
342244	RHEL 9 : httpd (RHSA-2026:62165)	Nessus	Red Hat Local Security Checks	9/1/2026	9/1/2026	critical

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