Critical severity · published Sep 11, 2025
CVE-2025-58143
[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…
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
[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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
4.13.0 before 4.17.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-58143
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-58143
Vendor Advisory
https://xenbits.xenproject.org/xsa/advisory-472.html
www.openwall.com
http://www.openwall.com/lists/oss-security/2025/09/09/1
xenbits.xen.org
http://xenbits.xen.org/xsa/advisory-472.html
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