Remote privilege escalation via WLAN firmware overwrite
Published Apr 1, 2024 · Updated Mar 13, 2025
Out-of-bounds write in MediaTek WLAN firmware allows remote attackers to escalate privileges without user interaction. The firmware fails to validate an unspecified input before writing beyond a buffer boundary; MediaTek has not disclosed the responsible parser or field. Network proximity is required, and successful exploitation can compromise confidentiality, integrity, and availability in the firmware context.
Summary
What happened
Out-of-bounds write in MediaTek WLAN firmware allows remote attackers to escalate privileges without user interaction. The firmware fails to validate an unspecified input before writing beyond a buffer boundary; MediaTek has not disclosed the responsible parser or field. Network proximity is required, and successful exploitation can compromise confidentiality, integrity, and availability in the firmware context.
The record
- CVE
- CVE-2024-20040
- Published
- Apr 1, 2024
- Updated
- Mar 13, 2025
- Vendor
- MediaTek
- Product
- MT6889
- Classifications
- CWE-20, CWE-787, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 1, 2024CVE publishedPublication date reported by the CVE source.
- Mar 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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