High severity · published Apr 7, 2026
CVE-2026-20432
In Modem, there is a possible out of bounds write due to a missing bounds check
8.0
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
MediaTek chipset · MediaTek, Inc.
MT2735; MT2737; MT6779; MT6781; MT6783; MT6785; +34 more · source: vendor
MF
Mt2735 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt2737 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6779 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6781 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6783 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6785 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6789 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6813 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6815 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6833 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6835 Firmware · Mediatek
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20432
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20432
Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/April-2026
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