What is the CVSS score of CVE-2025-20672?

CVE-2025-20672 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

How to fix or mitigate CVE-2025-20672?

Within 24 hours: Identify and inventory all affected devices using vulnerable Bluetooth drivers; disable Bluetooth on non-essential systems. Within 7 days: Implement network segmentation to restrict affected devices from sensitive network segments; establish a patch readiness plan. Within 30 days: Deploy vendor patch WCNCR00412257 via staged rollout; validate remediation across all affected systems.

Bluetooth CVE-2025-20672

EUVD-2025-16598 CRITICAL

Heap-based Buffer Overflow (CWE-122)

2025-06-02 security@mediatek.com

Privilege Escalation Buffer Overflow Bluetooth Mediatek Mt7902 Firmware Mt7921 Firmware Mt7922 Firmware Mt7925 Firmware Mt7927 Firmware

9.8

CVSS 3.1 · NVD

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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Weakness	CWE CWE-122 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Heap buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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 9.8, EPSS 0.30%.
Exploit ScenarioDerived	Bluetooth packet triggers heap overflow.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

Heap OOB write in Android Bluetooth driver via incorrect bounds check.

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 16:47 CVSS 9.8

Bluetooth driver heap overflow in Android.

RemediationAI

Apply Android security update.

Affected VersionsENISA

MT7902, MT7921, MT7922, MT7925, MT7927 NB SDK release 3.6 and before

Affects your stack

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

Technical ContextAI · show details

CWE-122.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/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

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00412257; Issue ID: MSV-3292.

Executive ViewAI

Why It Matters

CVE-2025-20672 is a critical Bluetooth driver vulnerability affecting local privilege escalation with a 9.8 CVSS score. While the exploit probability remains low (0.3% EPSS), any successful attack allows an authenticated user to gain elevated system privileges, potentially compromising device security and sensitive data.

Business Impact: High

Compensating Controls

Disable Bluetooth functionality on systems where it is not operationally required; implement strict user access controls and privilege management to limit local user capabilities; apply network segmentation to isolate affected devices; monitor for suspicious privilege escalation attempts; restrict driver installation permissions through Group Policy or Mobile Device Management; maintain detailed audit logging of privileged account activities.

Threat Intelligence Overview

EPSS Score

0.3%

Top 47% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD

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 CRITICAL

CISA KEV No

Public POC No

EPSS 0.3%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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.