Medium severity · published Aug 3, 2026
CVE-2026-20489
In display, there is a possible information disclosure due to an integer overflow
4.4
CVSS
0.2%
EPSS
No
On KEV
Description
In display, there is a possible information disclosure due to an integer overflow. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11004274; Issue ID: MSV-7749.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
MediaTek chipset · MediaTek, Inc.
MT6991; MT6993; MT8126; MT8171; MT8188; MT8189; +11 more · source: vendor
MF
Mt6991 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt6993 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8126 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8171 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8188 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8189 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8367 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8668 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8676 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8678 Firmware · Mediatek
All versions, or not specified · source: NVD
MF
Mt8766 Firmware · Mediatek
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20489
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20489
Vendor Advisory
https://www.mediatek.com/product-security-bulletin/August-2026
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