Privilege Escalation Vulnerability in MediaTek Telephony Software
CVE-2026-20483

7.7HIGH

Key Information:

Vendor

MediaTek
Status
Mediatek Chipset
Vendor
CVE Published:
3 August 2026

What is CVE-2026-20483?

A vulnerability has been identified in MediaTek's Telephony software that allows an attacker to escalate privileges locally due to a missing permission check. This issue enables unauthorized access to elevated privileges without needing additional execution rights or user interaction. Users running affected versions are advised to apply the necessary patches to secure their systems.

Affected Version(s)

MediaTek chipset MT6739

MediaTek chipset MT6761

MediaTek chipset MT6765

References

https://www.mediatek.com/product-security-bulletin/August...

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.