6.4

CVE-2026-12610: fedoraproject sssd Expired Pointer Dereference

CVSS: 6.4v3.1MediumUndergoing analysis
AliasesSUSE-SU-2026:22999-1SUSE-SU-2026:23061-1SUSE-SU-2026:23110-1
Published 30-06-2026Last modified 31-08-2026
Open JSON

Vulnerability summary

CVE-2026-12610 is a medium (CVSS 6.4) Expired Pointer Dereference vulnerability in fedoraproject sssd. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2026:4456-1

Timeline

  1. 30-06-2026
    PublishedVulnerability first disclosed.
  2. 31-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse9 products
  • sssd&distro=SUSE Linux Enterprise Micro 5.3< 2.5.2-150400.4.48.1
  • sssd&distro=SUSE Linux Enterprise Micro 5.4< 2.5.2-150400.4.48.1
  • sssd&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 2.10.2-150700.9.37.1
  • sssd&distro=SUSE Linux Enterprise Server 16.0< 2.10.2-160000.4.1
  • sssd&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 2.10.2-160000.4.1
Debian1 product
  • sssdAll versions (No fix recorded)
Fedoraproject1 product
Opensuse1 product
  • sssd&distro=openSUSE Leap 16.0< 2.10.2-160000.4.1
Redhat1 product
Ubuntu1 product
  • sssdAll versions (No fix recorded) | < 2.6.3-1ubuntu3.8 | < 2.9.4-1.1ubuntu6.7 | < 2.12.0-1ubuntu5.3

6 vendors · 14 products

References

17 links
Show all 17 references