CVE-2025-21816

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

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 10.1% 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 2026-06-17.

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

2025-02-27 20:04Z1 YR AGO

Last updated

2026-05-23 15:57Z3 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-664Improper Control of a Resource Through its LifetimePillar

Data version

5.2

Document digest

76db887f9c0b219b462181b5d5ad04487e80e4d0f6141fc631edbd8f651a2b14

• git.kernel.orghttps://git.kernel.org/stable/c/82ac6adbbb2aad14548a71d5e2e37f4964a15e38
• git.kernel.orghttps://git.kernel.org/stable/c/63815bef47ec25f5a125019ca480882481ee1553
• git.kernel.orghttps://git.kernel.org/stable/c/e456a88bddae4030ba962447bb84be6669f2a0c1
• git.kernel.orghttps://git.kernel.org/stable/c/2aecec58e9040ce3d2694707889f9914a2374955
• git.kernel.orghttps://git.kernel.org/stable/c/53dac345395c0d2493cbc2f4c85fe38aef5b63f5
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html