CVE-2022-40134 — An information leak vulnerability in the SMI Set BIOS Password SMI Handler in some Lenovo models may allow an attacker with local access and elevated privileges to read SMM memory

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MEDIUM

An information leak vulnerability in the SMI Set BIOS Password SMI Handler in some Lenovo models may allow an attacker with local access and elevated privileges to read SMM memory

Published Jan 30, 2023

4.4

MEDIUM

CVSS 3.1

EPSS 0.20%

Description

An information leak vulnerability in the SMI Set BIOS Password SMI Handler in some Lenovo models may allow an attacker with local access and elevated privileges to read SMM memory.

Affected products

Vendor Lenovo Product BIOS Default
unaffected
- Version
  various
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Lenovo

BIOS

unaffected

Version	Status	Constraints
various	affected	-

Remediation

Vendor solution

Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-94953.

Metrics

0.20% 0.00196

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00196

Score over time

2023–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (7 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.20% (0.00196)	8.36th	v5 (v2026.06.15)
Jun 15, 2026	0.20% (0.00196)	9.39th	v5 (v2026.06.15)
Mar 17, 2025	0.04% (0.00042)	9.98th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	5.07th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Jan 31, 2023	0.89% (0.00885)	27.43th	v2 (v2022.01.01)