VDB-320497 · CVE-2025-4371 · GCVE-0-2025-4371

Lenovo 510 FHD Webcam/Performance FHD Webcam up to 4.7.x Firmware Update signature verification

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Lenovo 510 FHD Webcam and Performance FHD Webcam up to 4.7.x. Affected by this issue is some unknown functionality of the component Firmware Update Handler. This manipulation causes signature verification. This vulnerability is tracked as CVE-2025-4371. It is feasible to perform the attack on the physical device. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Lenovo 510 FHD Webcam and Performance FHD Webcam up to 4.7.x. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Firmware Update Handler. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a USB connection.

The weakness was disclosed by Mickey Shkatov and Jesse Michael. The advisory is shared at support.lenovo.com. This vulnerability is known as CVE-2025-4371 since 05/05/2025. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.8.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Lenovo

Name

Version

License

commercial

Website

Vendor: https://www.lenovo.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector (lenovo): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: 510 FHD Webcam/Performance FHD Webcam 4.8.0

Timelineinfo

05/05/2025 CVE reserved
08/18/2025 +105 days Advisory disclosed
08/18/2025 +0 days VulDB entry created
08/18/2025 +0 days VulDB entry last update

Sourcesinfo

Vendor: lenovo.com

Advisory: support.lenovo.com
Researcher: Mickey Shkatov, Jesse Michael
Status: Confirmed

CVE: CVE-2025-4371 (🔒)
GCVE (CVE): GCVE-0-2025-4371
GCVE (VulDB): GCVE-100-320497

Entryinfo

Created: 08/18/2025 22:29
Changes: 08/18/2025 22:29 (76)
Complete: 🔍
Cache ID: 216::103