VDB-379576 · CVE-2026-10589 · EUVD-2026-44981

Lenovo BIOS System Management Mode EXECUTE out-of-bounds write

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.
8.2	$0-$5k	4.88+

Summaryinfo

A vulnerability categorized as very critical has been discovered in Lenovo BIOS. Affected is the function EXECUTE of the component System Management Mode. Executing a manipulation can lead to out-of-bounds write. This vulnerability is handled as CVE-2026-10589. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability classified as very critical was found in Lenovo BIOS (affected version unknown). This vulnerability affects the function EXECUTE of the component System Management Mode. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A potential out of bounds write vulnerability could allow a local privileged attacker to execute code in System Management Mode.

The advisory is shared for download at support.lenovo.com. This vulnerability was named CVE-2026-10589 since 06/01/2026. The exploitation appears to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-44981). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Lenovo

Name

BIOS

License

commercial

Website

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

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.2

VulDB Base Score: 8.2
VulDB Temp Score: 8.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/01/2026 CVE reserved
07/16/2026 +45 days Advisory disclosed
07/16/2026 +0 days VulDB entry created
07/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: lenovo.com

Advisory: support.lenovo.com
Status: Confirmed

CVE: CVE-2026-10589 (🔒)
GCVE (CVE): GCVE-0-2026-10589
GCVE (VulDB): GCVE-100-379576
EUVD: 🔒

Entryinfo

Created: 07/16/2026 19:13
Updated: 07/16/2026 20:51
Changes: 07/16/2026 19:13 (52), 07/16/2026 20:51 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.