Log in Start free

Vulnerability · Published Oct 6, 2026 · Assigned by redhat

CVE-2026-104032Sssd: sssd: denial of service via unprivileged autofs cache invalidation

Medium 5.5

In plain English

A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)<0.1%top 99.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12sssdno fix listedDEBIAN-CVE-2026-104032
Debian:13sssdno fix listedDEBIAN-CVE-2026-104032
Ubuntu:22.04:LTSsssdno fix listedUBUNTU-CVE-2026-104032
Ubuntu:24.04:LTSsssdno fix listedUBUNTU-CVE-2026-104032
Ubuntu:26.04:LTSsssdno fix listedUBUNTU-CVE-2026-104032
Ubuntu:26.10sssdno fix listedUBUNTU-CVE-2026-104032

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-408 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References