CVE-2025-25184VulnerabilityPublished 13 May 2025Updated 27 Jun 2026

Red Hat Security Advisory: pcs security update

Affects Red HatSource GCVE Database

Not known to be exploited.

Data as of 25 Oct 2026, 19:02 UTC

Severity

Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 1.1% chance of exploitation in 30 days – higher than 67% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Red Hat Product Security Red Hat	Affected Red Hat Red Hat Enterprise Linux Red Hat Enterprise Linux High Availability (v. 9) Red Hat Enterprise Linux Resilient Storage (v. 9) src	Fixed in–

AI-suggested

An official security update from Red Hat is available addressing CVE-2025-25184. Users should apply the update as described in Red Hat advisory RHSA-2025:7085 and the linked article https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor. Systems running affected Red Hat Enterprise Linux 9 High Availability and Resilient Storage variants should be updated promptly to remediate this vulnerability.

Description

The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities. Security Fix(es): * rubygem-rack: Possible Log Injection in Rack::CommonLogger (CVE-2025-25184) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

Impact

The vulnerability allows possible log injection via the Rack::CommonLogger component in rubygem-rack, which could lead to manipulation or corruption of log data. Red Hat rates the security impact as moderate. There are no known exploits in the wild at this time. The issue affects systems using the pcs packages for cluster configuration on Red Hat Enterprise Linux 9 High Availability and Resilient Storage variants.

Summary

The pcs packages in Red Hat Enterprise Linux 9, which configure Pacemaker and Corosync, were updated to fix a possible log injection vulnerability in the rubygem-rack component's Rack::CommonLogger (CVE-2025-25184). This vulnerability is categorized under CWE-117 (Improper Output Neutralization for Logs). Red Hat has issued a security advisory (RHSA-2025:7085) describing the update and its moderate security impact. The advisory covers multiple Red Hat Enterprise Linux 9 High Availability and Resilient Storage product variants across various architectures. The update is available and users should follow Red Hat's instructions to apply it.

CWE-117Improper Output Neutralization for Logs (opens in a new tab)
Base weaknessLikelihood of exploit: MediumOWASP Top 10 A09:2025: Security Logging & Alerting Failures (opens in a new tab)
The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Implementation · Output Encoding
Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8.
Implementation · Input Validation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174).
OWASP Cheat Sheets
Logging (opens in a new tab)
Content Security Policy (opens in a new tab)
Application Logging Vocabulary (opens in a new tab)
OWASP ASVS 4.0.3
V7.3.1 (opens in a new tab)
V14.4.6 (opens in a new tab)
V14.4.4 (opens in a new tab)
Attack patterns
Audit Log Manipulation (opens in a new tab)
Web Server Logs Tampering (opens in a new tab)
Log Injection-Tampering-Forging (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Jun 2026, 22:13 UTC

WeaknessesCWE-117

Technical details

References

Community reviews

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