CVE-2026-31666

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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.1% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-04-24 14:45Z4 MO AGO

Last updated

2026-08-05 12:24Z1 MO AGO

Reserved

2026-03-09

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-393Return of Wrong Status CodeBase

Data version

5.2

Document digest

e0bcdf9fe66c4f1431a52747353ebcfc6f854c214c0ad06a0136d4c9a4d68bed

• git.kernel.orghttps://git.kernel.org/stable/c/4125a194db4a6cf91f619f38788272651cb97dce
• git.kernel.orghttps://git.kernel.org/stable/c/450e6a685d0cad95b15f8af152057bd0bf79f50b
• git.kernel.orghttps://git.kernel.org/stable/c/ab1e022379c3c811aa72da8eb0c7507859a1d0f5
• git.kernel.orghttps://git.kernel.org/stable/c/316fb1b3169efb081d2db910cbbfef445afa03b9