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Vulnerability Assessment

Weakness
CWE
CWE-74
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Input neutralization, injection prevention
Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: physical attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.5% exploitation probability (EPSS)

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AnalysisAI

In some Lenovo ThinkPad products, one BIOS region is not properly included in the checks, allowing injection of arbitrary code. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-74. In some Lenovo ThinkPad products, one BIOS region is not properly included in the checks, allowing injection of arbitrary code. Affected products include: Lenovo E42-80 Firmware, Lenovo E42-80 Isk Firmware, Lenovo E52-80 Firmware, Lenovo E52-80 Isk Firmware, Lenovo Miix 720-12Ikb Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 6.8 MEDIUM
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

In some Lenovo ThinkPad products, one BIOS region is not properly included in the checks, allowing injection of arbitrary code.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.5%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

35
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:o:lenovo:e42-80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:e42-80_isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:e52-80_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:e52-80_isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:miix_720-12ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v310-14ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v310-14isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v310-15ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v310-15isk_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v510-14ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v510-15ikb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l380_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e480_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_e580_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l480_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_l580_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_p51_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_p51s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_p52_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_p52s_firmware:*:*:*:*:*:*:*:*
+ 23 more

More in E42 80 Firmware

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In some Lenovo IdeaPad consumer notebook models, a race condition in the BIOS flash device locking mechanism is not adeq

Same weakness CWE-74 – Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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CVE-2019-2725 CRITICAL POC
9.8
CVE-2013-2251 CRITICAL POC
9.8
CVE-2022-27924 HIGH POC
7.5
CVE-2016-4010 CRITICAL POC
9.8
CVE-2015-1592 HIGH POC
7.5
CVE-2025-20281 CRITICAL POC
10.0
CVE-2023-29525 HIGH POC
8.8
CVE-2015-7309 MEDIUM POC
6.5

Same technique RCE

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CVE-2021-44228 CRITICAL POC
10.0
CVE-2017-7269 CRITICAL POC
9.8
CVE-2022-47966 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2023-3519 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2016-4117 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8

References

Advisories & patches
PATCH https://support.lenovo.com/us/en/solutions/LEN-20527 REF http://www.securityfocus.com/bid/105387

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