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CVE

CVE-2026-20431

In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, if a UE ha

In Modem, there is a possible system crash due to a logic error. 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: MOLY01106496.

Issue ID: MSV-4467.

MEDIUM · CVSS 6.5 EPSS 0.0004
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

19
mediatek mt6813 firmwareall versions
mediatek mt6815 firmwareall versions
mediatek mt6835 firmwareall versions
mediatek mt6878 firmwareall versions
mediatek mt6897 firmwareall versions
mediatek mt6899 firmwareall versions
mediatek mt6986 firmwareall versions
mediatek mt6991 firmwareall versions
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@mediatek.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Apr 2026 · 04:16 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://corp.mediatek.com/product-security-bulletin/April-2026Vendor Advisory
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