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No exploitation reportedFix available

CVE-2022-2735

No exploitation reported by the sources we read.

  • Published2022-09-06
  • WeaknessCWE-276

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

Timeline

dates in UTC
  1. 2022-09-0618:15CVE publishedNVD

Versions per branch

NVD
Clusterlabs pcs
BranchAffectedFixed in
0.x≥ 0.10.5, ≤ 0.11.3no fix published
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • pcsUbuntu:Pro:22.04:LTSall versions · fixed in 0.10.11-2ubuntu3+esm1
  • pcsUbuntu:Pro:20.04:LTSall versions · fixed in 0.10.4-3ubuntu0.1~esm1
  • pcsUbuntu:Pro:16.04:LTSall versions · fixed in 0.9.149-1ubuntu1.1+esm1
  • pcsRocky Linux:9all versions · fixed in 0:0.11.1-10.el9_0.2
  • pcsRocky Linux:8all versions · fixed in 0:0.10.12-6.el8_6.2
  • pcsRed Hat:rhel_eus:8.4::resilientstorageall versions · fixed in 0:0.10.8-1.el8_4.2and 1 other package
  • pcsRed Hat:rhel_eus:8.4::highavailabilityall versions · fixed in 0:0.10.8-1.el8_4.2and 1 other package
  • pcsRed Hat:rhel_eus:8.2::resilientstorageall versions · fixed in 0:0.10.4-6.el8_2.3and 1 other package

14 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-2735 Red Hat Product Security64 products fixed

    pcs: obtaining an authentication token for hacluster user could lead to privilege escalation

  • RHSA-2022:6341 Red Hat Product Security16 products fixed

    Red Hat Security Advisory: pcs security update

  • RHSA-2022:6314 Red Hat Product Security16 products fixed

    Red Hat Security Advisory: pcs security update

  • RHSA-2022:6313 Red Hat Product Security16 products fixed

    Red Hat Security Advisory: pcs security update

  • RHSA-2022:6312 Red Hat Product Security16 products fixed

    Red Hat Security Advisory: pcs security update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2022:6341 · 16 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.8read 2026-10-23
  • CNAweakness (CWE)CWE-276known since 2026-10-23
  • NVDweakness (CWE)CWE-276read 2026-10-23
  • FIRST EPSSEPSS score0.3 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2022-09-06
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-7xr9-rmm4-cq6v

Frequently asked questions

What is CVE-2022-2735?

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

Is CVE-2022-2735 actively exploited?

Active exploitation of CVE-2022-2735 has not been confirmed. Its EPSS score was 0.3% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-2735?

CVE-2022-2735 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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