9.8

CVE-2025-20654: mediatek, inc. mt6890, mt7622, mt7915, mt7916, mt7981, mt7986 Out-of-bounds Write

CVSS: 9.8v3.1CriticalAnalyzed
Published 07-04-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20654 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in mediatek, inc. mt6890, mt7622, mt7915, mt7916, mt7981, mt7986. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.82%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-04-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.82%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

+0.01 pp

From 0.81% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.82%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mediatek7 products
Mediatek, inc.1 product
Openwrt1 product

3 vendors · 9 products

References

1 links