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VulnerabilityPublished

CVE-2026-20563: 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, 03:02 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
61 affected builds
Fixed in–

AI-suggested

Patch ID MOLY01777997 is referenced, indicating a fix likely exists or is planned. Users and vendors should verify with MediaTek for the availability of official patches or updates addressing this issue. Until patched, avoid connecting to untrusted or rogue base stations.

Description

CVE-2026-20563 is an out-of-bounds write vulnerability in MediaTek chipsets' modem component caused by an incorrect bounds check. Exploitation can lead to a remote denial of service when a user equipment (UE) connects to a rogue base station controlled by an attacker. No additional execution privileges or user interaction are required for exploitation.

References

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