[UPDATE] [medium] X.Org X11 and Xwayland: Multiple vulnerabilities
A local attacker can exploit multiple vulnerabilities in X.Org X11 and Xwayland to cause a Denial-of-Service state and potentially execute code or achieve unspecified effects.
CSIRTS triage
- What
- A local attacker can exploit multiple vulnerabilities in X.Org X11 and Xwayland to cause a Denial-of-Service state and potentially execute code or achieve unspecified effects.
- Who is affected
- Local users of X.Org X11 and Xwayland.
- Urgency
- Remediation is important as it could lead to denial of service and potential code execution.
- Action
- Update to the latest version of X.Org X11 and Xwayland.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-1352
Exploitation outlook
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-2025-491750.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-491760.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-491770.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-491780.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-491790.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-491800.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-49175 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-49176 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-49177 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-49178 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-49179 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-49180 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for X.Org X11 and Xwayland
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] X.Org X11 and Xwayland: Multiple vulnerabilities allow code execution and DoScert-bund · 2026-09-02
- medium[UPDATE] [medium] X.Org X11, Xwayland: Multiple vulnerabilitiescert-bund · 2026-08-26
- high[UPDATE] [high] Xwayland and X.Org X11: Multiple vulnerabilities allow unspecified attackcert-bund · 2026-08-26
- medium[UPDATE] [medium] X.Org X11 and Xwayland: Multiple vulnerabilitiescert-bund · 2026-08-26
More from CERT-Bund (BSI) Security Advisories
- high[UPDATE] [hoch] Red Hat Enterprise Linux (postgis, virtuoso-opensource): Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Red Hat Enterprise Linux: Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Denial of Service2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen2026-09-11
- high[UPDATE] [hoch] OpenSSL: Mehrere Schwachstellen2026-09-11