CVE-2026-20452: CWE-122 Heap Overflow in MediaTek, Inc. MediaTek chipset
CVE-2026-20452 is a heap buffer overflow vulnerability in the wlan AP driver of MediaTek chipsets. This memory corruption flaw can be exploited remotely by an adjacent attacker without user interaction, requiring only user-level execution privileges. Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability. The vulnerability affects multiple MediaTek chipset models including MT6890, MT7615, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992, and MT7993. The CVSS v3.1 base score is 8.0, indicating a high severity. No official patch or remediation level has been confirmed yet, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20452) involves a heap buffer overflow (CWE-122) in the wlan AP driver of various MediaTek chipsets. The flaw allows remote attackers in proximal or adjacent network positions to cause memory corruption that may lead to code execution with user privileges. Exploitation does not require user interaction. The affected chipsets include MT6890, MT7615, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992, and MT7993. The CVSS 3.1 score of 8.0 reflects high impact on confidentiality, integrity, and availability. The vendor has assigned a patch ID (WCNCR00480138) and issue ID (MSV-6295), but no public patch or official remediation level is currently documented.
Potential Impact
If exploited, this heap overflow vulnerability can lead to remote code execution with user-level privileges, potentially compromising confidentiality, integrity, and availability of affected devices. The attacker must be in a proximal or adjacent network position but does not require user interaction. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the MediaTek vendor advisory for current remediation guidance. The vendor has assigned a patch ID, indicating a patch may exist internally or is in development, but no public patch or official fix level is currently documented. Until a patch is available, affected users should monitor vendor communications for updates.
CVE-2026-20452: CWE-122 Heap Overflow in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20452 is a heap buffer overflow vulnerability in the wlan AP driver of MediaTek chipsets. This memory corruption flaw can be exploited remotely by an adjacent attacker without user interaction, requiring only user-level execution privileges. Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability. The vulnerability affects multiple MediaTek chipset models including MT6890, MT7615, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992, and MT7993. The CVSS v3.1 base score is 8.0, indicating a high severity. No official patch or remediation level has been confirmed yet, and no known exploits are reported in the wild.
CVSS v3.1
Score 8.0high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20452) involves a heap buffer overflow (CWE-122) in the wlan AP driver of various MediaTek chipsets. The flaw allows remote attackers in proximal or adjacent network positions to cause memory corruption that may lead to code execution with user privileges. Exploitation does not require user interaction. The affected chipsets include MT6890, MT7615, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992, and MT7993. The CVSS 3.1 score of 8.0 reflects high impact on confidentiality, integrity, and availability. The vendor has assigned a patch ID (WCNCR00480138) and issue ID (MSV-6295), but no public patch or official remediation level is currently documented.
Potential Impact
If exploited, this heap overflow vulnerability can lead to remote code execution with user-level privileges, potentially compromising confidentiality, integrity, and availability of affected devices. The attacker must be in a proximal or adjacent network position but does not require user interaction. No known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the MediaTek vendor advisory for current remediation guidance. The vendor has assigned a patch ID, indicating a patch may exist internally or is in development, but no public patch or official fix level is currently documented. Until a patch is available, affected users should monitor vendor communications for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.013Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1d8336e29bf47b50f6ae41
Added to database: 06/01/2026, 13:03:50 UTC
Last enriched: 06/08/2026, 20:56:44 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 80
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