Y2
Public vulnerability disclosure

CVE-2026-20566

CVE-2026-20566

publishedCWE-787

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: MOLY01923663 / ALPS11315955; Issue ID: MSV-10866.

Investigate in Cyber JSONMarkdown
Technical severityUnscoredNo score in collected sources
Published2026-11-02Source updated 2026-11-02
Collected2026-11-021 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

ProductVersionsAuthority
MediaTek chipset
MediaTek, Inc. 		MT2716 (affected)
MT2735 (affected)
MT2737 (affected)
MT6813 (affected)
MT6815 (affected)
MT6833 (affected)
MT6835 (affected)
MT6853 (affected)
MT6855 (affected)
MT6858 (affected)
MT6873 (affected)
MT6875 (affected)
MT6877 (affected)
MT6878 (affected)
MT6879 (affected)
MT6880 (affected)
MT6881 (affected)
MT6883 (affected)
MT6885 (affected)
MT6886 (affected)
MT6889 (affected)
MT6890 (affected)
MT6891 (affected)
MT6893 (affected)
MT6895 (affected)
MT6896 (affected)
MT6897 (affected)
MT6899 (affected)
MT6980 (affected)
MT6982 (affected)
MT6983 (affected)
MT6985 (affected)
MT6986 (affected)
MT6988 (affected)
MT6989 (affected)
MT6990 (affected)
MT6991 (affected)
MT6993 (affected)
MT8676 (affected)
MT8678 (affected)
MT8791 (affected)
Other versions: unaffected 		CNA: MediaTek

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

No CVSS assessment reported. An unscored record is not a low-severity determination.

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References