PT-2026-5642 · Modem · Modem

Published 2026-02-02 · Updated 2026-02-12 · CVE-2026-20420

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Modem (affected versions not specified)

Description A flaw exists in Modem that may lead to a system crash due to improper error handling. This could result in a remote denial of service if a User Equipment (UE) connects to a malicious base station controlled by an attacker. Exploitation does not require any user interaction or elevated privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-20420

Affected Products

Modem

References · 5

• https://corp.mediatek.com/product-security-bulletin/February-2026 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20420 · Security Note
• https://reddit.com/r/solanaSeeker/comments/1r2vkeg/vulnerability_cve202620420 · Reddit Post
• https://twitter.com/CVEnew/status/2018249246278099085 · Twitter Post
• https://t.me/CVEtracker/43480 · Telegram Post