VulnSocial

CVE-2026-20421Disclosure(mediatek / mt2735)

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, 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: MOLY01738293; Issue ID: MSV-5922.

mediatek CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mt2735
  • mt6833
  • mt6853
  • mt6855

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
mediatek
Products
mt2735mt6833mt6853mt6855mt6873mt6875mt6877mt6880mt6883mt6885

1 version affected across 16 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-02: 2Technical Details · 2026-02-02: 102-02
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-20421 Modem Remote Denial of Service Vulnerability via Base Station Connection https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20421

    Post summary

    The text only lists the CVE and links to a generic page, with no further technical, exploit, or mitigation details.

    0000061
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-20421 In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base statio… https://www.cve.org/CVERecord?id=CVE-2026-20421

    Post summary

    The post announces CVE-2026-20421, describing a potential remote denial-of-service due to improper input validation in Modem, which could cause system crashes.

    00000194
    56.5K followersView on X
CPE platform detail16 entries

16 of 16 entries

PartVendorProductVersionTarget SWTarget HW
HWmediatekmt2735---
HWmediatekmt6833---
HWmediatekmt6853---
HWmediatekmt6855---
HWmediatekmt6873---
HWmediatekmt6875---
HWmediatekmt6877---
HWmediatekmt6880---
HWmediatekmt6883---
HWmediatekmt6885---
HWmediatekmt6889---
HWmediatekmt6890---
HWmediatekmt6891---
HWmediatekmt6893---
HWmediatekmt8791---
OSmediateknr15---

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