Adjacent privilege escalation via WLAN heap overflow
Published Oct 14, 2025 · Updated Oct 14, 2025
Heap overflow in MediaTek WLAN AP drivers on affected chipsets allows remote attackers to escalate privileges without authentication. The driver applies an incorrect bounds check before writing to a heap buffer, allowing attacker-controlled input to overwrite memory beyond the allocation. Exploitation requires adjacent wireless reachability but no user interaction or existing execution privileges, and successful attacks gain elevated privileges in the WLAN AP driver context.
Summary
What happened
Heap overflow in MediaTek WLAN AP drivers on affected chipsets allows remote attackers to escalate privileges without authentication. The driver applies an incorrect bounds check before writing to a heap buffer, allowing attacker-controlled input to overwrite memory beyond the allocation. Exploitation requires adjacent wireless reachability but no user interaction or existing execution privileges, and successful attacks gain elevated privileges in the WLAN AP driver context.
The record
- CVE
- CVE-2025-20720
- Published
- Oct 14, 2025
- Updated
- Oct 14, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, CWE-122, T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Oct 14, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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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