CVE-2026-52991

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

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 1.8% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-20.

Red Hat severity

Important. 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

2026-06-24 16:29Z2 MO AGO

Last updated

2026-08-20 12:31Z15 DAYS AGO

Reserved

2026-06-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.2

Document digest

e90faa69018c5471e9bd7a981ccd8ae8fc9dfddaeb44f3d1031dd731d6f53d3e

• git.kernel.orghttps://git.kernel.org/stable/c/03dc070fa0fc3cb4068693f468ccd5f8a7e58282
• git.kernel.orghttps://git.kernel.org/stable/c/d4352c0709bfd38c752fccbde7fd72a82ac78f23
• git.kernel.orghttps://git.kernel.org/stable/c/a5b98009f16d8a5fb4a8ff9a193f5735515c38fa
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-52991vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2492403https://bugzilla.redhat.com/show_bug.cgi?id=2492403issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52991.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:57251vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:57252vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:57253vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:57254vendor-advisoryx_refsource_REDHAT