CVE-2026-20434
HIGHMediaTek Modem - Out-of-bounds Write via Rogue Base Station Connection
Title source: llmDescription
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 needed for exploitation. Patch ID: MOLY00782946; Issue ID: MSV-4135.
References (1)
Core 1
Core References
Various Sources
https://corp.mediatek.com/product-security-bulletin/March-2026
Scores
CVSS v3
7.5
EPSS
0.0007
EPSS Percentile
21.9%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (50)
mediatek/lr12a
mediatek/lr13
mediatek/nr15
mediatek/nr16
mediatek/nr17
MediaTek, Inc./MediaTek chipset
MT2735
MediaTek, Inc./MediaTek chipset
MT2737
MediaTek, Inc./MediaTek chipset
MT6739
MediaTek, Inc./MediaTek chipset
MT6761
MediaTek, Inc./MediaTek chipset
MT6762
... and 40 more
Published
Mar 02, 2026
Tracked Since
Mar 02, 2026