CVE-2025-40252

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.60% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 46.4% 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

Deferred. NVD last modified this record on 2026-07-30.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2025-12-04 16:08Z9 MO AGO

Last updated

2026-08-05 12:08Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

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-170Improper Null TerminationBase

Data version

5.2

Document digest

41c01c5e94ee34dffcd47b58d244de85cdc53936f7a71d79d860a775c6236912

• git.kernel.orghttps://git.kernel.org/stable/c/ecbb12caf399d7cf364b7553ed5aebeaa2f255bc
• git.kernel.orghttps://git.kernel.org/stable/c/a778912b4a53587ea07d85526d152f85d109cbfe
• git.kernel.orghttps://git.kernel.org/stable/c/f0923011c1261b33a2ac1de349256d39cb750dd0
• git.kernel.orghttps://git.kernel.org/stable/c/917a9d02182ac8b4f25eb47dc02f3ec679608c24
• git.kernel.orghttps://git.kernel.org/stable/c/e441db07f208184e0466abf44b389a81d70c340e
• git.kernel.orghttps://git.kernel.org/stable/c/896f1a2493b59beb2b5ccdf990503dbb16cb2256
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-253495.html