Medium severity · published Feb 2, 2026
CVE-2026-20402
In Modem, there is a possible system crash due to improper input validation
6.5
CVSS
0.2%
EPSS
No
On KEV
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: MOLY00693083; Issue ID: MSV-5928.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% 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; MT6833; MT6853; MT6855; MT6873; MT6875; +13 more · source: vendor
NR
Nr15 · Mediatek
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20402
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20402
Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/February-2026
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