Linux Distros Unpatched Vulnerability : CVE-2026-12610

medium Nessus Plugin ID 324379

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. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit. (CVE-2026-12610)

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

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 324379

File Name: unpatched_CVE_2026_12610.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 7/1/2026

Updated: 7/6/2026

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: Medium

Score: 4.9

Percentile: 58.03

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.6

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

CVSS Score Source: CVE-2026-12610

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:python3-sss-murmur, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:python3-sssdconfig, p-cpe:/a:centos:centos:sssd-client, p-cpe:/a:redhat:enterprise_linux:sssd-nfs-idmap, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:centos:centos:sssd-proxy, p-cpe:/a:redhat:enterprise_linux:sssd-ipa, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:libsss_certmap, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:libsss_nss_idmap-devel, p-cpe:/a:centos:centos:sssd-common-pac, p-cpe:/a:centos:centos:sssd-passkey, p-cpe:/a:centos:centos:sssd-polkit-rules, p-cpe:/a:redhat:enterprise_linux:sssd, p-cpe:/a:centos:centos:sssd-idp, p-cpe:/a:redhat:enterprise_linux:sssd-ad, p-cpe:/a:redhat:enterprise_linux:python3-sssdconfig, p-cpe:/a:redhat:enterprise_linux:sssd-common-pac, p-cpe:/a:centos:centos:libsss_nss_idmap, p-cpe:/a:centos:centos:pam-devel, p-cpe:/a:centos:centos:sssd-common, p-cpe:/a:centos:centos:sssd-ldap, p-cpe:/a:centos:centos:libsss_sudo, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:pam-devel, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:sssd-passkey, p-cpe:/a:redhat:enterprise_linux:sssd-ldap, p-cpe:/a:centos:centos:libsss_nss_idmap-devel, p-cpe:/a:redhat:enterprise_linux:sssd-krb5, p-cpe:/a:redhat:enterprise_linux:sssd-polkit-rules, p-cpe:/a:redhat:enterprise_linux:sssd-tools, p-cpe:/a:redhat:enterprise_linux:pam-libs, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:redhat:enterprise_linux:libsss_idmap, p-cpe:/a:redhat:enterprise_linux:libsss_sudo, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:sssd-libwbclient, p-cpe:/a:canonical:ubuntu_linux:sssd, p-cpe:/a:redhat:enterprise_linux:libsss_simpleifp, p-cpe:/a:redhat:enterprise_linux:sssd-krb5-common, p-cpe:/a:centos:centos:sssd-nfs-idmap, p-cpe:/a:debian:debian_linux:sssd, p-cpe:/a:redhat:enterprise_linux:sssd-common, p-cpe:/a:centos:centos:sssd-dbus, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:sssd-ipa, p-cpe:/a:centos:centos:sssd-tools, p-cpe:/a:centos:centos:pam, p-cpe:/a:redhat:enterprise_linux:sssd-dbus, p-cpe:/a:centos:centos:libsss_certmap, p-cpe:/a:centos:centos:python3-libipa_hbac, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:sssd-libwbclient, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:sssd-kcm, p-cpe:/a:centos:centos:libsss_simpleifp, p-cpe:/a:redhat:enterprise_linux:libsss_nss_idmap, p-cpe:/a:redhat:enterprise_linux:python3-sss-murmur, p-cpe:/a:redhat:enterprise_linux:sssd-client, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:sssd-winbind-idmap, p-cpe:/a:redhat:enterprise_linux:pam-docs, p-cpe:/a:centos:centos:libipa_hbac, p-cpe:/a:centos:centos:pam-libs, p-cpe:/a:centos:centos:sssd-krb5-common, p-cpe:/a:redhat:enterprise_linux:sssd-idp, p-cpe:/a:centos:centos:sssd-krb5, p-cpe:/a:centos:centos:sssd, p-cpe:/a:redhat:enterprise_linux:python3-libsss_nss_idmap, p-cpe:/a:redhat:enterprise_linux:sssd-proxy, p-cpe:/a:centos:centos:sssd-winbind-idmap, p-cpe:/a:centos:centos:python3-libsss_nss_idmap, p-cpe:/a:centos:centos:sssd-kcm, p-cpe:/a:centos:centos:python3-sss, p-cpe:/a:centos:centos:libsss_idmap, p-cpe:/a:redhat:enterprise_linux:python3-sss, p-cpe:/a:redhat:enterprise_linux:pam, p-cpe:/a:redhat:enterprise_linux:python3-libipa_hbac, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:sssd-ad, p-cpe:/a:centos:centos:libsss_autofs, p-cpe:/a:redhat:enterprise_linux:libipa_hbac, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:pam-docs, p-cpe:/a:redhat:enterprise_linux:libsss_autofs

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: 6/30/2026

Reference Information

CVE: CVE-2026-12610

Detections

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