CVE-2026-114713

HIGH8.6

CISA KEV

Published 2026-11-08 · Updated 2026-11-13 · Source cve@mitre.org

Summary

CVE-2026-114713 is a high-severity (CVSS 8.6) vulnerability in UnrealIRCd UnrealIRCd. CISA added it to the Known Exploited Vulnerabilities catalog on November 13, 2026, which means exploitation in the wild has been confirmed; US federal agencies must remediate it by November 16, 2026. CISA does not currently list it as used in ransomware campaigns.

Description

The labeled-response module in UnrealIRCd 6.0.0 before 6.2.7.1 does not escape the IRCv3 "label" message tag when echoing it into replies, which allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CWE-140

CISA Known-Exploited Vulnerability

Product: UnrealIRCd — UnrealIRCd

Name: UnrealIRCd Improper Neutralization of Delimiters Vulnerability

Date added: 2026-11-13 · Due: 2026-11-16

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

References

View on NVD

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