Medium severity · published Sep 7, 2026
CVE-2026-20500
In Modem, there is a possible system crash due to improper input validation
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
In Modem, there is a possible system crash due to improper input validation. This could lead to local denial of service with User execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01810811; Issue ID: MSV-9232.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
MediaTek chipset · MediaTek, Inc.
MT2716; MT6835; MT6858; MT6878; MT6881; MT6897; +16 more · source: vendor
MF
Mt2716 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6835 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6858 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6878 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6881 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6897 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6899 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6982vb Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6986 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6988 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6991 Firmware · Mediatek
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20500
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20500
Vendor Advisory
https://www.mediatek.com/product-security-bulletin/September-2026
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