CVE-2026-50258
An attacker can exploit multiple vulnerabilities in X.Org X11 and Xwayland to disclose information, escalate privileges, conduct a denial of service attack, and perform an unspecified attack.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to disclose information, escalate privileges, conduct a denial of service attack, and perform an unspecified attack.
- Who is affected
- Deployments of X.Org X11 and Xwayland are affected.
- Urgency
- Remediation is medium urgency due to the range of impacts possible.
- Action
- Update to the latest version of X.Org X11 and Xwayland.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-50258
Get an email if CVE-2026-50258 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[UPDATE] [medium] X.Org X11 and Xwayland: Multiple vulnerabilitiescert-bund · 2026-08-17
- unknownDSA-6370-1 incus - security updatedebian · 2026-06-26
- highCVE-2026-50258: Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key t…msrc · 2026-06-09
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-50258)