CVE-2026-56002
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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Exploitation outlook
- Low exploitation risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
Advisory coverage (6)
- medium[NEW] [medium] X.Org X11 Server (libXfont2): Multiple vulnerabilities allow execution of arbitrary code with a…cert-bund · 2026-08-13
- unknownUSN-8560-1: libXfont vulnerabilitiesubuntu · 2026-07-20
- unknownDSA-6388-1 libxfont - security updatedebian · 2026-07-15
- unknownMultiple vulnerabilities in Microsoft Azure Linux (July 15, 2026)cert-fr-avis · 2026-07-15
- highCVE-2026-56002: libXfont2 PCF Font Parsing Heap Buffer Overflowmsrc · 2026-07-14
- highCVE-2026-56002: A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.…nvd · 2026-07-08
External references
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