CVE-2026-20454
Description
A race condition in MediaTek geniezone leads to an out-of-bounds write, enabling local escalation of privilege after gaining System privilege.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A race condition in MediaTek geniezone leads to an out-of-bounds write, enabling local escalation of privilege after gaining System privilege.
Vulnerability
In geniezone, a race condition exists that could cause an out-of-bounds write [1]. The vulnerability affects devices using MediaTek chipsets, such as MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6835, MT6853, and others listed in the June 2026 bulletin [1]. The issue requires System privilege to be exploited [1].
Exploitation
An attacker must already have obtained System privilege on the device [1]. The race condition can then be triggered to bypass normal bounds checking. User interaction is not needed for exploitation [1].
Impact
Successful exploitation leads to local escalation of privilege, as the out-of-bounds write can allow an attacker to further elevate their control within the system [1].
Mitigation
MediaTek has released a patch (ALPS10873936) [1]. Device OEMs have been notified and are expected to deploy the fix. End users should apply updates from their device manufacturer when available. There is no known active exploitation in the wild as of the publication date [1].
AI Insight generated on Jun 1, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1News mentions
1- MediaTek: Four CVEs Disclosed — Three GenieZone TEE Bugs and a WLAN Driver OverflowVypr Intelligence · Jun 1, 2026