CVE-2026-50263
Several vulnerabilities were discovered in the Xorg X server, which may result in privilege escalation if the X server is running privileged. https://security-tracker.debian.org/tracker/DSA-6370-1
CSIRTS triage
- What
- Several vulnerabilities in the Xorg X server may lead to privilege escalation.
- Who is affected
- Deployments of the Xorg X server are affected.
- Urgency
- Remediation is important due to the risk of privilege escalation.
- Action
- Apply the latest security update for Xorg.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[UPDATE] [medium] X.Org X11 and Xwayland: Multiple vulnerabilitiescert-bund · 2026-07-09
- unknownDSA-6370-1 incus - security updatedebian · 2026-06-26
- mediumCVE-2026-50263: Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclos…msrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-50263)