CVE-2026-20465: CWE-122 Heap-based Buffer Overflow in MediaTek, Inc. MediaTek chipset
A heap-based buffer overflow vulnerability exists in the wlan AP driver of certain MediaTek chipsets due to a missing bounds check. This flaw could allow a remote attacker in close proximity to escalate privileges without needing additional execution privileges or user interaction. The affected chipsets include MT6890, MT7915, MT7916, MT7981, and MT7986. No patch or official remediation has been confirmed yet.
AI Analysis
Technical Summary
CVE-2026-20465 is a heap-based buffer overflow vulnerability (CWE-122) found in the wlan AP driver of MediaTek chipsets MT6890, MT7915, MT7916, MT7981, and MT7986. The issue arises from a missing bounds check leading to an out-of-bounds write. Exploitation can occur remotely by an attacker in physical proximity, enabling escalation of privileges without requiring additional execution privileges or user interaction. The vulnerability is documented with Patch ID WCNCR00489200 and Issue ID MSV-7834, but no confirmed patch or remediation level is currently available.
Potential Impact
The vulnerability allows a remote attacker located near the affected device to escalate privileges on the system without needing additional execution privileges or user interaction. This could potentially lead to unauthorized control or compromise of the device's wlan AP driver functionality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
CVE-2026-20465: CWE-122 Heap-based Buffer Overflow in MediaTek, Inc. MediaTek chipset
Description
A heap-based buffer overflow vulnerability exists in the wlan AP driver of certain MediaTek chipsets due to a missing bounds check. This flaw could allow a remote attacker in close proximity to escalate privileges without needing additional execution privileges or user interaction. The affected chipsets include MT6890, MT7915, MT7916, MT7981, and MT7986. No patch or official remediation has been confirmed yet.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-20465 is a heap-based buffer overflow vulnerability (CWE-122) found in the wlan AP driver of MediaTek chipsets MT6890, MT7915, MT7916, MT7981, and MT7986. The issue arises from a missing bounds check leading to an out-of-bounds write. Exploitation can occur remotely by an attacker in physical proximity, enabling escalation of privileges without requiring additional execution privileges or user interaction. The vulnerability is documented with Patch ID WCNCR00489200 and Issue ID MSV-7834, but no confirmed patch or remediation level is currently available.
Potential Impact
The vulnerability allows a remote attacker located near the affected device to escalate privileges on the system without needing additional execution privileges or user interaction. This could potentially lead to unauthorized control or compromise of the device's wlan AP driver functionality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.015Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a700181bf32cb7a34d5c9df
Added to database: 08/03/2026, 02:48:33 UTC
Last enriched: 08/03/2026, 03:24:49 UTC
Last updated: 08/03/2026, 03:37:48 UTC
Views: 2
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