CVE-2023-45077 | BDVDB-2026-216384 Detail

LenovoBIOS

Description#

A memory leakage vulnerability was reported in the 534D0740 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-125 Out-of-bounds Read

References#

https://support.lenovo.com/us/en/product_security/LEN-141775

Exploit#

No public exploit known

History#

Version 12023-11-08Record published in the CVE List.
Version 22024-09-04Most recent update recorded in the CVE List.

Published

Published: 2023-11-08
Last modified: 2024-09-04

Vendor information

Vendor: Lenovo
Product: BIOS

All Lenovo vulnerabilities

Score

6.7 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 14.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
various
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.7 Medium

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).