CVE-2025-27466

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.3% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-09-11 14:05Z1 YR AGO

Last updated

2025-11-04 21:09Z11 MO AGO

Reserved

2025-02-26

Assigning CNA

XEN

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-395Use of NullPointerException Catch to Detect NULL Pointer DereferenceBase

Data version

5.2

Document digest

795d3f105e76181a2eb0b96d888f7f9c17d531dfa46b27e0eb964fcb5661fd4d

• xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-472.html
• xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-472.html
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/09/09/1