Privilege escalation via unchecked USB preloader input
Published Sep 6, 2022 · Updated Aug 3, 2024
Out-of-bounds write in the MediaTek USB preloader on Android 11.0 and 12.0 allows physically proximate attackers to escalate privileges. The preloader omits a bounds check while processing USB input, allowing attacker-controlled data to be written beyond the intended buffer. Exploitation requires physical device access and user interaction but no existing execution privileges; the memory corruption supports local privilege escalation.
Summary
What happened
Out-of-bounds write in the MediaTek USB preloader on Android 11.0 and 12.0 allows physically proximate attackers to escalate privileges. The preloader omits a bounds check while processing USB input, allowing attacker-controlled data to be written beyond the intended buffer. Exploitation requires physical device access and user interaction but no existing execution privileges; the memory corruption supports local privilege escalation.
The record
- CVE
- CVE-2022-26468
- Published
- Sep 6, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, CWE-20, T1068
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 6, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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