CVE-2023-20821

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-04 · updated 2026-06-17
Weakness: CWE-787

Description

In nvram, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07937113; Issue ID: ALPS07937113.

Affected products

Android: 11.0, 12.0, 13.0
Linuxfoundation Yocto: 2.6
openwrt: 19.07.0, 21.02.0
Rdkcentral Rdk-B: 2022q3

References

https://corp.mediatek.com/product-security-bulletin/September-2023
https://corp.mediatek.com/product-security-bulletin/September-2023

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