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VulnerabilityPublished

CVE-2026-20545: MediaTek chipset · Out-of-bounds Write

Affects MediaTek chipsetSource CVE Database V5

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Not known to be exploited.

Data as of 2 Nov 2026, 03:13 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
MediaTek, Inc.MediaTek chipsetAffected
  • MT2716 – MT8893
74 affected builds
Fixed in–

AI-suggested

MediaTek has released patches identified by Patch IDs MOLY01879158 and MOLY01774038 to fix this vulnerability. Users and device manufacturers should apply these official fixes to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-20545 is an out-of-bounds write vulnerability in MediaTek chipsets' modem component caused by a missing bounds check. This flaw allows remote escalation of privilege if a user equipment (UE) connects to a rogue base station controlled by an attacker. Exploitation does not require user interaction or additional execution privileges. Multiple MediaTek chipset models are affected. A patch has been identified by MediaTek under Patch IDs MOLY01879158 and MOLY01774038.

References

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