CVE-2026-31788
A local attacker from a guest VM can exploit a vulnerability in Xen to bypass security measures.
CSIRTS triage
- What
- A vulnerability in Xen allows a local attacker from a guest VM to bypass security measures.
- Who is affected
- Local attackers with access to a guest VM can exploit this vulnerability.
- Urgency
- Remediation is medium urgency due to the potential for security measure bypass.
- Action
- Apply the latest security updates for Xen.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[UPDATE] [medium] Xen: Vulnerability allows bypassing security measurescert-bund · 2026-07-07
External references
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[](https://www.csirts.com/cve/CVE-2026-31788)