CVE-2025-21766

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

0.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 42.7% 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

2025-02-27 02:18Z1 YR AGO

Last updated

2026-08-05 11:54Z1 MO AGO

Reserved

2024-12-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

• CWE-413Improper Resource LockingBase

Data version

5.2

Document digest

3e15a1252e2d08153b984fef1552f46c641ef600c9da845b6d4c0ed8ea26f825

• git.kernel.orghttps://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33f
• git.kernel.orghttps://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e
• git.kernel.orghttps://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4
• git.kernel.orghttps://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a
• git.kernel.orghttps://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e
• git.kernel.orghttps://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html