CVE-2026-20541

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-05 · updated 2026-10-09
Weakness: CWE-126

Description

In Modem, there is a possible out of bounds read due to a missing permission check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01774038; Issue ID: MSV-8911.

Affected products

Mediatek Mt2716 Firmware: all versions
Mediatek Mt2735 Firmware: all versions
Mediatek Mt2737 Firmware: all versions
Mediatek Mt6739 Firmware: all versions
Mediatek Mt6761 Firmware: all versions
Mediatek Mt6762 Firmware: all versions
Mediatek Mt6763 Firmware: all versions
Mediatek Mt6765 Firmware: all versions
Mediatek Mt6767 Firmware: all versions
Mediatek Mt6768 Firmware: all versions
Mediatek Mt6769 Firmware: all versions
Mediatek Mt6771 Firmware: all versions
Mediatek Mt6779 Firmware: all versions
Mediatek Mt6781 Firmware: all versions
Mediatek Mt6783 Firmware: all versions
Mediatek Mt6785 Firmware: all versions
Mediatek Mt6789 Firmware: all versions
Mediatek Mt6813 Firmware: all versions
Mediatek Mt6815 Firmware: all versions
Mediatek Mt6833 Firmware: all versions
Mediatek Mt6835 Firmware: all versions
Mediatek Mt6853 Firmware: all versions
Mediatek Mt6855 Firmware: all versions
Mediatek Mt6858 Firmware: all versions
Mediatek Mt6873 Firmware: all versions
Mediatek Mt6875 Firmware: all versions
Mediatek Mt6877 Firmware: all versions
Mediatek Mt6878 Firmware: all versions
Mediatek Mt6879 Firmware: all versions
Mediatek Mt6880 Firmware: all versions

References

https://www.mediatek.com/product-security-bulletin/October-2026

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