A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.

alibaba_cloud_linux ALINUX3-SA-2026:0330: ALINUX3-SA-2026:0330: tftp security update (Moderate)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:78952 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the RHSA-2026:80663 advisory.

    The Trivial File Transfer Protocol (TFTP) is typically used only for booting diskless workstations. The     tftp packages include the tftp and tftp-server subpackages. The tftp subpackage provides the user     interface for TFTP and the tftp-server subpackage provides the server. This allows users to transfer files     to and from a remote machine.

    Security Fix(es):

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:80663 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-80663 advisory.

    [5.2-40.1]
    - fix buffer overflow in remap genmatchstring() with inverse rules       (CVE-2026-85234) (RHEL-260629)

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

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

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:80663 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130162 advisory.

    A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also     aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()`     function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can     exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and     resulting in a denial of service.

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

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

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:82280 advisory.

    The Trivial File Transfer Protocol (TFTP) is typically used only for booting diskless workstations. The     tftp packages include the tftp and tftp-server subpackages. The tftp subpackage provides the user     interface for TFTP and the tftp-server subpackage provides the server. This allows users to transfer files     to and from a remote machine.

    Security Fix(es):

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:82280 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The Rocky Linux 10.2 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2026_82280 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2026_80663 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-2044:02 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-2039:01 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the ELSA-2026-82280 advisory.

    [5.2-50.1]
    - fix buffer overflow in remap genmatchstring() with inverse rules       (CVE-2026-85234) (RHEL-260604)

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

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

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:82280 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2026_78952 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

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

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-78952 advisory.

    [5.2-28]
    - fix buffer overflow in remap genmatchstring() with inverse rules       (CVE-2026-85234) (RHEL-260620)

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

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:78952 advisory.

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the RHSA-2026:78952 advisory.

    The Trivial File Transfer Protocol (TFTP) is typically used only for booting diskless workstations. The     tftp packages include the tftp and tftp-server subpackages. The tftp subpackage provides the user     interface for TFTP and the tftp-server subpackage provides the server. This allows users to transfer files     to and from a remote machine.

    Security Fix(es):

    * tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

    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 this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also     aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()`     function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can     exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and     resulting in a denial of service. (CVE-2026-85234)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
369289	RockyLinux 8 : tftp (RLSA-2026:78952)	Nessus	Rocky Linux Local Security Checks	Local	high
369256	RHEL 9 : tftp (RHSA-2026:80663)	Nessus	Red Hat Local Security Checks	Local	high
369168	RockyLinux 9 : tftp (RLSA-2026:80663)	Nessus	Rocky Linux Local Security Checks	Local	high
368035	Oracle Linux 9 : tftp (ELSA-2026-80663)	Nessus	Oracle Linux Local Security Checks	Local	high
367958	AlmaLinux 9 : tftp (ALSA-2026:80663)	Nessus	Alma Linux Local Security Checks	Local	high
366264	Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: tftp (UTSA-2026-130162)	Nessus	Unity Linux Local Security Checks	Local	high
366171	RHEL 10 : tftp (RHSA-2026:82280)	Nessus	Red Hat Local Security Checks	Local	high
365617	AlmaLinux 10 : tftp (ALSA-2026:82280)	Nessus	Alma Linux Local Security Checks	Local	high
365593	Rocky Linux 10.2 [CIQ] Security Update: tftp / tftp-debuginfo / tftp-debugsource / tftp-server / etc (crlsa-2026_82280)	Nessus	Rocky Linux Local Security Checks	Local	high
365590	Rocky Linux 9 [CIQ] Security Update: tftp / tftp-debuginfo / tftp-debugsource / tftp-server / etc (crlsa-2026_80663)	Nessus	Rocky Linux Local Security Checks	Local	high
365558	MiracleLinux 9 : tftp-5.2-40.el9_8.1 (AXSA:2026-2044:02)	Nessus	Miracle Linux Local Security Checks	Local	high
365533	MiracleLinux 8 : tftp-5.2-28.el8_10.ML.1 (AXSA:2026-2039:01)	Nessus	Miracle Linux Local Security Checks	Local	high
365482	Oracle Linux 10 : tftp (ELSA-2026-82280)	Nessus	Oracle Linux Local Security Checks	Local	high
365353	RockyLinux 10 : tftp (RLSA-2026:82280)	Nessus	Rocky Linux Local Security Checks	Local	high
364604	Rocky Linux 8 [CIQ] Security Update: tftp / tftp-debuginfo / tftp-debugsource / tftp-server / etc (crlsa-2026_78952)	Nessus	Rocky Linux Local Security Checks	Local	high
364464	Oracle Linux 8 : tftp (ELSA-2026-78952)	Nessus	Oracle Linux Local Security Checks	Local	high
364377	AlmaLinux 8 : tftp (ALSA-2026:78952)	Nessus	Alma Linux Local Security Checks	Local	high
364154	RHEL 8 : tftp (RHSA-2026:78952)	Nessus	Red Hat Local Security Checks	Local	high
345957	Linux Distros Unpatched Vulnerability : CVE-2026-85234	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-85234

high

Tenable Plugins

Coming Soon

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high