SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-40551

An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.

MEDIUM 5.1EPSS 0.40%

Does this matter?

Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.

Description

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.

CVSS 3.1
5.1 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
EPSS
0.40% probability · 33th percentile
CISA KEV
Not listed
Weakness
CWE-125
Affected
redhat/shim · fedoraproject/fedora · redhat/enterprise linux
Source
secalert@redhat.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.