What is the CVSS score of CVE-2026-1652?

CVE-2026-1652 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-1652?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Smart Connect CVE-2026-1652

MEDIUM

Heap-based Buffer Overflow (CWE-122)

2026-03-11 psirt@lenovo.com

Buffer Overflow Heap Overflow Microsoft Lenovo Smart Connect

6.9

CVSS 4.0 · Vendor: lenovo

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Vulnerability Assessment

Weakness	CWE CWE-122 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Heap buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 6.1 (MEDIUM). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Exploitable via local access.
Exploit ScenarioDerived	An attacker (requires authentication) could exploit this vulnerability to a local authenticated user to corrupt memory and cause a Windows blue screen err.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

The Lenovo Virtual Bus driver in Smart Connect contains a buffer overflow that allows local authenticated users to corrupt memory and trigger system crashes on Windows systems. This vulnerability requires valid credentials and local access, limiting exposure to users already present on affected machines. No patch is currently available to address this issue.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:07 CVSS 6.1

A potential buffer overflow vulnerability was reported in the Lenovo Virtual Bus driver used in Smart Connect that could allow a local authenticated user to corrupt memory and cause a Windows blue screen error. [CVSS 6.1 MEDIUM]

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-122 (Heap-based Buffer Overflow). A potential buffer overflow vulnerability was reported in the Lenovo Virtual Bus driver used in Smart Connect that could allow a local authenticated user to corrupt memory and cause a Windows blue screen error.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (lenovo) PRIMARY 6.9 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (lenovo) · only source for this CVE.

CVSS VectorVendor: lenovo

Attack Vector

Local

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

Low

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

CVSS changed

Aug 20, 2026 - 17:22 NVD

6.1 (MEDIUM) 6.9 (MEDIUM)

CVE Published

Mar 11, 2026 - 21:16 nvd

MEDIUM 6.1

DescriptionCVE.org

Executive ViewAI

Why It Matters

Organizations using A potential buffer overflow vulnerability should be aware of moderate risk from CVE-2026-1652, a heap-based buffer overflow vulnerability rated CVSS 6.1. Exploitation could cause memory corruption or application crashes. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.

Threat Intelligence Overview

EPSS Score

0.0%

Top 97% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

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 0.0%

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

Human Impact

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +34

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Heap Overflow HIGH

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.