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CVE-2025-20734

MEDIUM
5.3
CVSS Score
Published: November 4, 2025 at 06:20 AM UTC
Updated: October 18, 2026 at 09:10 PM UTC
3 products affected across 3 vendorsOpenWRTSoftware Development KitMT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986· also runs on 8 platforms

Using MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 by MediaTek, Inc.?

Get instant alerts when new vulnerabilities affect MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 - before attackers find them.

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00441507; Issue ID: MSV-4112.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Software Development Kit· MediaTek
95%
All versionsv ≤ 7.6.7.2
mediatek-mt6890 (environment) · mediatek-mt7615 (environment) · mediatek-mt7622 (environment) · mediatek-mt7663 (environment) · mediatek-mt7915 (environment) · mediatek-mt7916 (environment) · mediatek-mt7981 (environment) · mediatek-mt7986 (environment)
OpenWRT· Openwrt
95%
19.07.021.02.0
mediatek-mt6890 (environment) · mediatek-mt7615 (environment) · mediatek-mt7622 (environment) · mediatek-mt7663 (environment) · mediatek-mt7915 (environment) · mediatek-mt7916 (environment) · mediatek-mt7981 (environment) · mediatek-mt7986 (environment)
MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986· MediaTek, Inc.
90%

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://corp.mediatek.com/product-security-bulletin/November-2025

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-122CWE-787

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