CVE-2026-23554
A local attacker can exploit multiple vulnerabilities in Xen and Citrix Systems XenServer to escalate privileges, cause a Denial-of-Service condition, or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities in Xen and Citrix XenServer allow privilege escalation, denial of service, and confidential information disclosure.
- Who is affected
- Deployments of Xen and Citrix XenServer with local access are affected.
- Urgency
- Medium priority; local access required but enables privilege escalation and data theft.
- Action
- Apply patches for CVE-2026-23554 and CVE-2026-23555 for both Xen and XenServer.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (2)
- medium[UPDATE] [medium] Xen and Citrix Systems XenServer: Multiple vulnerabilitiescert-bund · 2026-08-10
- unknownDSA-6424-1 xen - security updatedebian · 2026-08-09
External references
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