CVE-2026-64138

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

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 34.4% 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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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 15:40Z1 MO AGO

Last updated

2026-08-05 12:39Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-639Authorization Bypass Through User-Controlled KeyBase

Data version

5.2

Document digest

3d69b2cb4cdf97875837d11c777acce83ccbb960251b3f21ebab6381715661c2

• git.kernel.orghttps://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11
• git.kernel.orghttps://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421
• git.kernel.orghttps://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb
• git.kernel.orghttps://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f