No exploitation reportedFix available

CVE-2025-27146

Q: Is CVE-2025-27146 actively exploited?

Active exploitation of CVE-2025-27146 has not been confirmed. Its EPSS score was 0.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2025-27146?

CVE-2025-27146 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

No exploitation reported by the sources we read.

Published2025-02-25
Fixed in3.0.4
WeaknessCWE-77 · CWE-88

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

matrix-appservice-irc is a Node.js IRC bridge for Matrix. The matrix-appservice-irc bridge up to version 3.0.3 contains a vulnerability which can lead to arbitrary IRC command execution as the puppeted user. The attacker can only inject commands executed as their own IRC user. The vulnerability has been patched in matrix-appservice-irc version 3.0.4.

Timeline

dates in UTC

2025-02-2520:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-27146?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-27146?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Matrix matrix irc bridge

Branch	Affected	Fixed in	Source
3.0	< 3.0.4	3.0.4	NVD · OSV

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

Fix

Update Matrix matrix irc bridge to 3.0.4

Advisories and patches

github.comPatch
github.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-02-25
OpenCVESSVC decisionnone—
CNACVSS 3.12.7read 2026-10-23
NVDCVSS 3.14.3read 2026-10-23
CNAweakness (CWE)CWE-77, CWE-88read 2026-10-23
NVDweakness (CWE)CWE-77read 2026-10-23
FIRST EPSSEPSS score0.4 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Published: 2025-02-25
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2025-27146?

Is CVE-2025-27146 actively exploited?

Active exploitation of CVE-2025-27146 has not been confirmed. Its EPSS score was 0.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-27146?

CVE-2025-27146 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

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