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.

Published: 2022-09-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-2735 is rated Low Risk (36.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-2735

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-13 0.04% 0.05% +0.01%
2 2025-12-28 0.05% 0.04% -0.01%
3 2025-12-27 — 0.05% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-2735

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2022-2735

OS Trackers for CVE-2022-2735

vendor priority summary link
debian not yet assigned CVE-2022-2735 not yet assigned priority: Debian including 1 source packages (pcs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-2735
redhat high — https://access.redhat.com/security/cve/CVE-2022-2735
ubuntu medium CVE-2022-2735 medium priority: Ubuntu including 1 source packages (pcs), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 8, released 3, DNE 1, ignored 1. https://ubuntu.com/security/CVE-2022-2735

Affected software / configurations for CVE-2022-2735

Vendor Product Version Raw CPE
clusterlabs pcs >= 0.10.5, <= 0.11.3 cpe:2.3:a:clusterlabs:pcs:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2022-2735

URL Tags
https://access.redhat.com/security/cve/CVE-2022-2735 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2116815 Issue Tracking Patch Third Party Advisory
https://www.debian.org/security/2022/dsa-5226 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/09/01/4 Mailing List Release Notes Third Party Advisory
cvelogic Threat Intelligence