CVE detail
CVE-2025-27466
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are multiple issues related to the handling and accessing of guest memory pages in the viridian code: 1. A NULL pointer dereference in the updating of the reference TSC area. This is CVE-2025-27466. 2. A NULL pointer dereference by assuming the SIM page is mapped when a synthetic timer message has to be delivered. This is CVE-2025-58142. 3. A race in the mapping of the reference TSC page, where a guest can get Xen to free a page while still present in the guest physical to machine (p2m) page tables. This is CVE-2025-58143.
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-472.htmlxenbits.xen.org
No excerpt available.
Vendor Advisoryxenbits.xen.orgSep 11, 2025, 2:15 PM - http://www.openwall.com/lists/oss-security/2025/09/09/1www.openwall.com
No excerpt available.
Exploitwww.openwall.comSep 11, 2025, 2:15 PM - https://xenbits.xenproject.org/xsa/advisory-472.htmlxenbits.xenproject.org
No excerpt available.
Vendor Advisoryxenbits.xenproject.orgSep 11, 2025, 2:15 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
Related records
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