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Linux Distros Unpatched Vulnerability : CVE-2026-104042

medium Nessus Plugin ID 363121

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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 sssd. A local attacker can cause a Denial of Service (DoS) by sending a crafted Pluggable Authentication Module (PAM) request containing a zero-length authentication token to the responder socket. Due to missing input validation, the service attempts to read beyond buffer boundaries when processing the token, causing the PAM responder to crash. (CVE-2026-104042)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-104042

https://security-tracker.debian.org/tracker/CVE-2026-104042

Plugin Details

Severity: Medium

ID: 363121

File Name: unpatched_CVE_2026_104042.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 10/6/2026

Updated: 10/6/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.66

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-104042

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:libipa_hbac-devel, p-cpe:/a:centos:centos:libipa_hbac-python, p-cpe:/a:centos:centos:libipa_hbac, p-cpe:/a:centos:centos:libsss_autofs, p-cpe:/a:centos:centos:libsss_certmap-devel, p-cpe:/a:centos:centos:libsss_certmap, p-cpe:/a:centos:centos:libsss_idmap-devel, p-cpe:/a:centos:centos:libsss_idmap, p-cpe:/a:centos:centos:libsss_nss_idmap-devel, p-cpe:/a:centos:centos:libsss_nss_idmap-python, p-cpe:/a:centos:centos:libsss_nss_idmap, p-cpe:/a:centos:centos:libsss_simpleifp-devel, p-cpe:/a:centos:centos:libsss_simpleifp, p-cpe:/a:centos:centos:libsss_sudo, p-cpe:/a:centos:centos:python-libipa_hbac, p-cpe:/a:centos:centos:python-libsss_nss_idmap, p-cpe:/a:centos:centos:python-sss-murmur, p-cpe:/a:centos:centos:python-sss, p-cpe:/a:centos:centos:python-sssdconfig, p-cpe:/a:centos:centos:python3-libipa_hbac, p-cpe:/a:centos:centos:python3-libsss_nss_idmap, p-cpe:/a:centos:centos:python3-sss-murmur, p-cpe:/a:centos:centos:python3-sss, p-cpe:/a:centos:centos:python3-sssdconfig, p-cpe:/a:centos:centos:sssd-ad, p-cpe:/a:centos:centos:sssd-client, p-cpe:/a:centos:centos:sssd-common-pac, p-cpe:/a:centos:centos:sssd-common, p-cpe:/a:centos:centos:sssd-dbus, p-cpe:/a:centos:centos:sssd-idp, p-cpe:/a:centos:centos:sssd-ipa, p-cpe:/a:centos:centos:sssd-kcm, p-cpe:/a:centos:centos:sssd-krb5-common, p-cpe:/a:centos:centos:sssd-krb5, p-cpe:/a:centos:centos:sssd-ldap, p-cpe:/a:centos:centos:sssd-libwbclient-devel, p-cpe:/a:centos:centos:sssd-libwbclient, p-cpe:/a:centos:centos:sssd-nfs-idmap, p-cpe:/a:centos:centos:sssd-passkey, p-cpe:/a:centos:centos:sssd-polkit-rules, p-cpe:/a:centos:centos:sssd-proxy, p-cpe:/a:centos:centos:sssd-tools, p-cpe:/a:centos:centos:sssd-winbind-idmap, p-cpe:/a:centos:centos:sssd, p-cpe:/a:debian:debian_linux:sssd, p-cpe:/a:redhat:enterprise_linux:libipa_hbac-devel, p-cpe:/a:redhat:enterprise_linux:libipa_hbac-python, p-cpe:/a:redhat:enterprise_linux:libipa_hbac, p-cpe:/a:redhat:enterprise_linux:libsss_autofs, p-cpe:/a:redhat:enterprise_linux:libsss_certmap-devel, p-cpe:/a:redhat:enterprise_linux:libsss_certmap, p-cpe:/a:redhat:enterprise_linux:libsss_idmap-devel, p-cpe:/a:redhat:enterprise_linux:libsss_idmap, p-cpe:/a:redhat:enterprise_linux:libsss_nss_idmap-devel, p-cpe:/a:redhat:enterprise_linux:libsss_nss_idmap-python, p-cpe:/a:redhat:enterprise_linux:libsss_nss_idmap, p-cpe:/a:redhat:enterprise_linux:libsss_simpleifp-devel, p-cpe:/a:redhat:enterprise_linux:libsss_simpleifp, p-cpe:/a:redhat:enterprise_linux:libsss_sudo, p-cpe:/a:redhat:enterprise_linux:python-libipa_hbac, p-cpe:/a:redhat:enterprise_linux:python-libsss_nss_idmap, p-cpe:/a:redhat:enterprise_linux:python-sss-murmur, p-cpe:/a:redhat:enterprise_linux:python-sss, p-cpe:/a:redhat:enterprise_linux:python-sssdconfig, p-cpe:/a:redhat:enterprise_linux:python3-libipa_hbac, p-cpe:/a:redhat:enterprise_linux:python3-libsss_nss_idmap, p-cpe:/a:redhat:enterprise_linux:python3-sss-murmur, p-cpe:/a:redhat:enterprise_linux:python3-sss, p-cpe:/a:redhat:enterprise_linux:python3-sssdconfig, p-cpe:/a:redhat:enterprise_linux:sssd-ad, p-cpe:/a:redhat:enterprise_linux:sssd-client, p-cpe:/a:redhat:enterprise_linux:sssd-common-pac, p-cpe:/a:redhat:enterprise_linux:sssd-common, p-cpe:/a:redhat:enterprise_linux:sssd-dbus, p-cpe:/a:redhat:enterprise_linux:sssd-idp, p-cpe:/a:redhat:enterprise_linux:sssd-ipa, p-cpe:/a:redhat:enterprise_linux:sssd-kcm, p-cpe:/a:redhat:enterprise_linux:sssd-krb5-common, p-cpe:/a:redhat:enterprise_linux:sssd-krb5, p-cpe:/a:redhat:enterprise_linux:sssd-ldap, p-cpe:/a:redhat:enterprise_linux:sssd-libwbclient-devel, p-cpe:/a:redhat:enterprise_linux:sssd-libwbclient, p-cpe:/a:redhat:enterprise_linux:sssd-nfs-idmap, p-cpe:/a:redhat:enterprise_linux:sssd-passkey, p-cpe:/a:redhat:enterprise_linux:sssd-polkit-rules, p-cpe:/a:redhat:enterprise_linux:sssd-proxy, p-cpe:/a:redhat:enterprise_linux:sssd-tools, p-cpe:/a:redhat:enterprise_linux:sssd-winbind-idmap, p-cpe:/a:redhat:enterprise_linux:sssd

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/6/2026

Reference Information

CVE: CVE-2026-104042