CVE detail
CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XS_RESET_WATCHES command within a transaction due to an assert() triggering. In case xenstored was built with NDEBUG #defined nothing bad will happen, as assert() is doing nothing in this case. Note that the default is not to define NDEBUG for xenstored builds even in release builds of Xen.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- http://xenbits.xen.org/xsa/advisory-484.htmlxenbits.xen.org
No excerpt available.
Vendor Advisoryxenbits.xen.orgMay 19, 2026, 2:16 PM - http://www.openwall.com/lists/oss-security/2026/04/28/11www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 19, 2026, 2:16 PM - https://xenbits.xenproject.org/xsa/advisory-484.htmlxenbits.xenproject.org
No excerpt available.
Vendor Advisoryxenbits.xenproject.orgMay 19, 2026, 2:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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