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CVE-2026-20499

HighCVSS 7.5/10Last modified Nov 4, 2026

Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, 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: MOLY01857954; Issue ID: MSV-8247.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
MediaTek, Inc.	MediaTek chipset	MT2716; MT2735; MT2737; MT6739; MT6761; MT6762; MT6763; MT6765; MT6767; MT6768; MT6769; MT6771; MT6779; MT6781; MT6783; MT6785; MT6789; MT6813; MT6833; MT6835

References

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

Timeline

Published: Nov 2, 2026
Last modified: Nov 4, 2026
NVD status: Undergoing Analysis

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CVE-2026-20499: High severity, CVSS 7.5 | Vulnix