What is the CVSS score of CVE-2025-20654?

CVE-2025-20654 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: 1.4%.

Which versions of Software Development Kit are affected by CVE-2025-20654?

CVE-2025-20654 presents critical security risk, a out-of-bounds write vulnerability rated CVSS 9.8.

How to fix or mitigate CVE-2025-20654?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Software Development Kit CVE-2025-20654

CRITICAL

Out-of-bounds Write (CWE-787)

2025-04-07 security@mediatek.com

Memory Corruption Buffer Overflow RCE Software Development Kit Mt7622 Mt7915 Mt7916 Mt7981 Mt7986 Openwrt Mt6890

9.8

CVSS 3.1 · NVD

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:35 vuln.today

CVE Published

Apr 07, 2025 - 04:15 nvd

CRITICAL 9.8

DescriptionCVE.org

In wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00406897; Issue ID: MSV-2875.

AnalysisAI

In wlan service, there is a possible out of bounds write due to an incorrect bounds check. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. In wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00406897; Issue ID: MSV-2875. Affected products include: Mediatek Software Development Kit, Mediatek Mt7622, Mediatek Mt7915, Mediatek Mt7916, Mediatek Mt7981.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).