CVE-2026-20578: MediaTek chipset · Algorithm Downgrade
Affects MediaTek chipsetSource CVE Database V5
Not known to be exploited.
Data as of 2 Nov 2026, 02:58 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| MediaTek, Inc.MediaTek chipset | Affected
| Fixed in– |
AI-suggested
Users and administrators should monitor MediaTek advisories for official fixes corresponding to Patch ID MOLY01879164. Until a patch is confirmed, avoid connecting devices to untrusted or rogue base stations where possible.
Description
CVE-2026-20578 is a vulnerability in MediaTek chipsets involving a side channel information disclosure in the modem. This flaw could allow an attacker controlling a rogue base station to cause a remote denial of service on a user equipment (UE) device without requiring any additional privileges or user interaction. The issue is tracked under CWE-757 (Algorithm Downgrade).