UnrealIRCd Improper Neutralization of Delimiters Vulnerability
UnrealIRCd / UnrealIRCd
Official facts
- CVE published
- 08/11/2026
- Added to CISA KEV
- 13/11/2026
- EPSS · 14/11/2026
- 0.51%
- Confirmed exploitation
- CISA KEV
Original description
UnrealIRCd UnrealIRCd contains an improper neutralization of delimiters vulnerability that allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.
Source material is displayed in its original language. EPSS estimates exploitation probability over the next 30 days; it is not evidence of an attack. An unknown score is not a low score.
Source-recommended 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.
Applicability depends on product, version and configuration. Verify affected versions using the official references.
CISA deadline for US federal civilian agencies: 16/11/2026
Official references
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- https://nvd.nist.gov/vuln/detail/CVE-2026-114713
- https://forums.unrealircd.org/viewtopic.php?t=9487
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
- https://www.unrealircd.org/
- https://www.unrealircd.org/index/news
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-114713