HOMEVULNERABILITIESCVE-2020-25654
HIGH

CVE-2020-25654

CWE-284Published: November 24, 2020· Updated: Jun 17, 2026

7.2
CVSS v3.1

Official Description

An ACL bypass flaw was found in pacemaker. An attacker having a local account on the cluster and in the haclient group could use IPC communication with various daemons directly to perform certain tasks that they would be prevented by ACLs from doing if they went through the configuration.

NVD Source

Technical Analysis

CVE-2020-25654 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

clusterlabs1 product(s)
pacemaker
Debian1 product(s)
debian linux
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1888191
ADVISORYhttps://lists.clusterlabs.org/pipermail/users/2020-October/027840.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/01/msg00007.html
ADVISORYhttps://seclists.org/oss-sec/2020/q4/83
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1888191
ADVISORYhttps://lists.clusterlabs.org/pipermail/users/2020-October/027840.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/01/msg00007.html
ADVISORYhttps://seclists.org/oss-sec/2020/q4/83

All References (10)

→
https://bugzilla.redhat.com/show_bug.cgi?id=1888191Issue Tracking · Third Party Advisory
→
https://lists.clusterlabs.org/pipermail/users/2020-October/027840.htmlMailing List · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.htmlMailing List · Third Party Advisory
→
https://seclists.org/oss-sec/2020/q4/83Mailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202309-09
→
https://bugzilla.redhat.com/show_bug.cgi?id=1888191Issue Tracking · Third Party Advisory
→
https://lists.clusterlabs.org/pipermail/users/2020-October/027840.htmlMailing List · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2021/01/msg00007.htmlMailing List · Third Party Advisory
→
https://seclists.org/oss-sec/2020/q4/83Mailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202309-09

Quick Facts

CVE IDCVE-2020-25654
CVSS Score7.2 / 10
SeverityHIGH
WeaknessCWE-284
CISA KEVNo
Affected2 vendor(s)
PublishedNov 24, 2020

Related CVEs (CWE-284)

CVE-2026-35435
10.0
CVE-2015-3306
10.0
CVE-2015-3073
10.0
CVE-2021-3554
10.0
CVE-2020-12030
10.0
CVE-2026-46978
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-25654 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2020-25654·NVD