CVE-2026-31521

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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.6% 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 2026-07-14.

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

2026-04-22 13:54Z4 MO AGO

Last updated

2026-07-14 12:48Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-1285Improper Validation of Specified Index, Position, or Offset in InputBase

Data version

5.2

Document digest

3f1af29840ab88d97f392ab3d8bcaecb2d2b43aa92d30a82ff4e79e2814fc880

• git.kernel.orghttps://git.kernel.org/stable/c/5d16f519b6eb1d071807e57efe0df2baa8d32ad6
• git.kernel.orghttps://git.kernel.org/stable/c/4bbdb0e48176fd281c2b9a211b110db6fd94e175
• git.kernel.orghttps://git.kernel.org/stable/c/082f15d2887329e0f43fd3727e69365f5bfe5d2c
• git.kernel.orghttps://git.kernel.org/stable/c/ec2b22a58073f80739013588af448ff6e2ab906f
• git.kernel.orghttps://git.kernel.org/stable/c/ef75dc1401d8e797ee51559a0dd0336c225e1776
• git.kernel.orghttps://git.kernel.org/stable/c/6ba6957c640f58dc8ef046981a045da43e47ea23
• git.kernel.orghttps://git.kernel.org/stable/c/f9d69d5e7bde2295eb7488a56f094ac8f5383b92
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html