CVE-2026-63916

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

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-07-27.

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

2026-07-19 14:55Z1 MO AGO

Last updated

2026-08-05 12:37Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

454066b95b17be0bd535877ba433d4c31afa75772680c9ffd63f7c9306b29ba7

• git.kernel.orghttps://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a
• git.kernel.orghttps://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf
• git.kernel.orghttps://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25
• git.kernel.orghttps://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298
• git.kernel.orghttps://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e
• git.kernel.orghttps://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16
• git.kernel.orghttps://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0
• git.kernel.orghttps://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae