CVE-2026-20496 Information disclosure in MediaTek chipset
A missing bounds check in MediaTek chipset firmware allows local attackers with System privileges to read out-of-bounds memory, disclosing sensitive information.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20496?
CVE-2026-20496 is a medium-severity vulnerability in MediaTek, Inc. MediaTek chipset, published on 3 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In geniezone, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11036877; Issue ID: MSV-7132.
Weakness: CWE-125
Which versions are affected by CVE-2026-20496?
It affects 17 products.
Products include Mediatek Mt6983 Firmware, Mediatek Mt8676 Firmware, Mediatek Mt8678 Firmware, Mediatek Mt8755 Firmware, Mediatek Mt8768 Firmware, Mediatek Mt8771 Firmware and 11 more.
How do I fix CVE-2026-20496?
No fix has been published for CVE-2026-20496 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20496 being exploited?
There is no known exploitation of CVE-2026-20496 in the wild and no public exploit code.
Sources
Also known as GHSA-rgfh-3wrp-q784.