CVE-2026-20566: MediaTek chipset · Out-of-bounds Write
Affects MediaTek chipsetSource CVE Database V5
Not known to be exploited.
Data as of 2 Nov 2026, 02:59 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
A patch is available from MediaTek identified by Patch ID MOLY01923663 / ALPS11315955. Applying this official fix will remediate the vulnerability. Users and device manufacturers should apply the patch to affected devices to mitigate the risk.
Description
CVE-2026-20566 is an out-of-bounds write vulnerability in MediaTek chipsets' modem component caused by a missing bounds check. Exploitation requires user interaction and a malicious actor with System privilege. Successful exploitation could lead to remote denial of service if a UE connects to a rogue base station controlled by the attacker. A patch is available identified by Patch ID MOLY01923663 / ALPS11315955.