What is CVE-2026-20585 in modem controllers?
CVE-2026-20585 is a high-severity security vulnerability affecting modem controllers due to a missing bounds check that results in an out-of-bounds write. Published on November 2, 2026, this flaw carries a CVSS base score of 7.5 according to official tracking metrics.
The issue is tracked under CWE-787 and is associated with issue ID MSV-9660 and patch ID MOLY01338165. For additional technical details, you can review the official advisory provided in the mediatek security bulletin.
Who is affected by this vulnerability and how does it trigger?
This security flaw impacts user equipment when it connects to a rogue base station controlled by an attacker. No additional execution privileges or user interaction are required for successful exploitation.
While researching security advisories, it is also useful to compare similar high-impact vulnerabilities like el fallo de escalada de privilegios or review component issues such as la vulnerabilidad critica en rust to understand modern threat vectors.
How do I protect my systems against this threat?
Administrators and device manufacturers must apply the official vendor patches promptly to neutralize the out-of-bounds write risk. You should monitor security channels and ensure that modem drivers incorporate all available mitigation steps.
Follow these recommended steps to secure your affected systems against rogue base station attacks:
- Verify your device firmware against the official November 2026 security bulletin.
- Apply patch ID MOLY01338165 supplied by MediaTek.
- Restrict connections to untrusted or unverified cellular base stations where possible.
- Review vendor instructions regularly for updated remediation packages.