Medium severity · published Mar 2, 2026
CVE-2026-20436
In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check
6.7
CVSS
0.1%
EPSS
No
On KEV
Description
In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00473802; Issue ID: MSV-5970.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
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.
MT7902; MT7920; MT7921; MT7922; MT7925; MT7927; +1 more · source: vendor
NS
Nbiot Sdk · Mediatek
through 3.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20436
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20436
Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/March-2026
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