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CVE

CVE-2026-20432

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of

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: MOLY01406170.

Issue ID: MSV-4461.

HIGH · CVSS 8 EPSS 0.00029
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

58
mediatek mt2735 firmwareall versions
mediatek mt2737 firmwareall versions
mediatek mt6779 firmwareall versions
mediatek mt6781 firmwareall versions
mediatek mt6783 firmwareall versions
mediatek mt8781 firmwareall versions
mediatek mt8789 firmwareall versions
mediatek mt8791 firmwareall versions
▣

Scoring & Timeline

8
HIGH · 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 · 04:17 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
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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