CVE-2022-48181

Local code execution via ErrorMessage stack overflow

Published Jun 5, 2023 · Updated Jan 8, 2025

Stack-based buffer overflow in Lenovo ThinkStation BIOS various versions allows local users to elevate privileges and execute arbitrary code. The ErrorMessage BIOS driver writes beyond a stack buffer, but Lenovo has not disclosed the triggering input or affected routine. Exploitation requires local access and high privileges and can compromise confidentiality, integrity, and availability through firmware-level code execution.

CVSS severity6.7
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Lenovo ThinkStation BIOS various versions allows local users to elevate privileges and execute arbitrary code. The ErrorMessage BIOS driver writes beyond a stack buffer, but Lenovo has not disclosed the triggering input or affected routine. Exploitation requires local access and high privileges and can compromise confidentiality, integrity, and availability through firmware-level code execution.

The record

CVE
CVE-2022-48181
Published
Jun 5, 2023
Updated
Jan 8, 2025
Vendor
Lenovo
Product
ThinkStation BIOS
Classifications
CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=various

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Lenovo · ThinkStation BIOSversion=various

Published CVSS scores

6.7Lenovo Group Ltd.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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