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Vulnerability Assessment

Weakness
CWE
CWE-693
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
Impact

CVSS score of 4.6 (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).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. 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-693. Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage. Affected products include: Lenovo Thinkpad Helix Firmware, Lenovo Thinkpad T550 Firmware, Lenovo Thinkpad W550S Firmware, Lenovo Thinkpad X1 Carbon 3Rd Gen Firmware, Lenovo Thinkpad X250 Firmware.

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

NVD PRIMARY 4.6 MEDIUM
AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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
None
Integrity
High
Availability
None

DescriptionNVD

Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% 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 0.2%
Patch available No
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

23
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +23
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:lenovo:thinkpad_helix_firmware:n17etb4w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_t550_firmware:n11et53w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_w550s_firmware:n11et53w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_x1_carbon_3rd_gen_firmware:n14et55w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_x250_firmware:n10et62w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkpad_yoga_15_firmware:n19et65w:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:730s-13iml_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_1-11igl05_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_1-14igl05_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_s940-14iil_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_s940-14iwl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_slim_1-11ast-05_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_slim_1-14ast-05_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v130-15igm_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v330-15ikb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:v330-15isk_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yoga_s730-13iml_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yoga_s940-14iil_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:yoga_s940-14iwl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_aio_5-24imb05_firmware:*:*:*:*:*:*:*:*
+ 1 more

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A potential vulnerability in the SMI callback function used in the Legacy USB driver using boot services structure in ru
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A potential vulnerability in the SMI callback function used in CSME configuration of some Lenovo Notebook and ThinkPad s

Same weakness CWE-693 – Protection Mechanism Failure

View all
CVE-2013-2465 CRITICAL POC
9.8
CVE-2024-21412 HIGH POC
8.1
CVE-2019-1003030 CRITICAL POC
9.9
CVE-2013-0431 LOW POC
3.7
CVE-2025-40536 HIGH POC
8.1
CVE-2024-38217 MEDIUM POC
5.4
CVE-2026-21513 HIGH
8.8
CVE-2026-21510 HIGH POC
8.8

Same technique Information Disclosure

View all
CVE-2019-2725 CRITICAL POC
9.8
CVE-2021-34523 CRITICAL POC
9.0
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2025-68613 HIGH POC
8.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5

References

Advisories & patches
ADVISORY https://support.lenovo.com/us/en/product_security/LEN-65529

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