CVE-2023-54207: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 (exact versions not specified); +1 more affected products

CVE-2023-54207 affects cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0. CVSS 3.1 base score 7.8 (Microsoft Security Response Center). EPSS 0.00156 (percentile 0.04345), scored 20-Oct-2026. Fixed version: 6.1.55-1. Fixed version: 6.5.3-1. Fixed version: 6.5.3-1.

Affected technology

cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

linux · Exact affected versions not specified by the source
Vendor not specified by the source

Component: Not specified by the source

Attack conditions (Microsoft Security Response Center, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Microsoft Security Response Center’s CVSS 3.1 assessment rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 21-Oct-2026 15:29 UTC

Product: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0
CCR priority: 31.2 /100 (P4)
CVSS 3.1: 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Microsoft Security Response Center
EPSS: 0.00156 · percentile 0.04345 · 2026-10-20
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-20 16:56:29.772392+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
OSV.dev · Source record · observed 2026-10-21 07:07:21.683489+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2023-54207.html