[NEW] [medium] X.Org X11 Server (libXfont2): Multiple vulnerabilities allow execution of arbitrary code with administrator privileges

A local attacker can exploit multiple vulnerabilities in X.Org X11 to gain elevated privileges and execute arbitrary code with root rights.

CSIRTS triage

What: Multiple vulnerabilities allow a local attacker to gain elevated privileges and execute arbitrary code with root rights.
Who is affected: Local users of X.Org X11 Server are affected.
Urgency: Remediation is medium urgency due to the risk of privilege escalation.
Action: Update to the latest version of X.Org X11 Server.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-560010.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
Low exploitation riskCVE-2026-560020.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
Low exploitation riskCVE-2026-560030.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-56001	coverage & exploitation status	NVD · CVE.org
CVE-2026-56002	coverage & exploitation status	NVD · CVE.org
CVE-2026-56003	coverage & exploitation status	NVD · CVE.org

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.