CVE-2025-39956

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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

2025-10-09 09:47Z11 MO AGO

Last updated

2026-08-05 12:06Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-431Missing HandlerBase

Data version

5.2

Document digest

ffcc485f94084ec4a49a8b7ab9b42a18b4b2129dbb395ef1418e342f5bd1e5d6

• git.kernel.orghttps://git.kernel.org/stable/c/bec504867acc7315de9cd96ef9161fa52a25abe8
• git.kernel.orghttps://git.kernel.org/stable/c/f05e82d8553232cef150a6dbb70ed67d162abb2b
• git.kernel.orghttps://git.kernel.org/stable/c/528eb4e19ec0df30d0c9ae4074ce945667dde919