CVE-2026-20458

HIGH

MediaTek Chipset - Out-of-bounds Write

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-20458. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-20458, a memory corruption vulnerability in a modem's baseband firmware. The code includes placeholder methods (`check` and `run`) but lacks actual exploit implementation or technical details about the vulnerability mechanics.

Description

In Modem, there is a possible memory corruption 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: MOLY01402160; Issue ID: MSV-7298.

Exploits (1)

github STUB 1 stars
by HermesNA-1 · pythonpoc
https://github.com/HermesNA-1/SnakeSploit/tree/main/data/modules_generated/cve-2026-20458_modem_there.py

This repository contains an auto-generated stub module for CVE-2026-20458, a memory corruption vulnerability in a modem's baseband firmware. The code includes placeholder methods (`check` and `run`) but lacks actual exploit implementation or technical details about the vulnerability mechanics.

Classification
Stub 98%
Attack Type
Other
Complexity
Complex
Reliability
Theoretical
Target: Modem baseband firmware (unspecified vendor/model, likely MediaTek based on reference)
No auth needed
Prerequisites: Target device must connect to a rogue base station controlled by the attacker · Exploit code must be implemented (currently missing)
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 7.5
EPSS 0.0020
EPSS Percentile 10.6%
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, Inc./MediaTek chipset MT2716
MediaTek, Inc./MediaTek chipset MT2737
MediaTek, Inc./MediaTek chipset MT6739
MediaTek, Inc./MediaTek chipset MT6761
MediaTek, Inc./MediaTek chipset MT6762
MediaTek, Inc./MediaTek chipset MT6763
MediaTek, Inc./MediaTek chipset MT6765
MediaTek, Inc./MediaTek chipset MT6767
MediaTek, Inc./MediaTek chipset MT6768
MediaTek, Inc./MediaTek chipset MT6769
... and 40 more
Published Jul 01, 2026
Tracked Since Jul 01, 2026