Paper/Archive/CVE-2025-20646

CVE-2025-20646

MediaTek, Inc. MT6890, MT7915, MT7916, MT7981, MT7986 — In wlan AP FW, there is a possible out of bounds write due to improper input validation.

EPSS 0.9%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 59.1.591 × 2011.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

In wlan AP FW, there is a possible out of bounds write due to improper input validation. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00389074; Issue ID: MSV-1803.

Affected

ProductAffectedFixed inSource

MT6890, MT7915, MT7916, MT7981, MT7986SDK release 7.6.7.2 and before–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refcorp.mediatek.com/product-security-bulletin/March-2025