PatchTheCVExen vulnerabilities
Recent CVEs affecting xen products. 2 tracked.
xen has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-05-19. Highest priority: CVE-2026-23558 (score 28/100).
- CVE-2026-23558 HIGH 7.8 MITIGATE The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when
- CVE-2026-23557 MEDIUM 6.5 MITIGATE Any guest can cause xenstored to crash by issuing a XS_RESET_WATCHES command within a transaction due to an as
FAQ
How do I fix xen vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is xen being exploited right now?
None of the tracked xen CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which xen CVE should I patch first?
CVE-2026-23558 currently ranks highest (28/100): The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when.