CVE-2026-20418 is a critical out-of-bounds write vulnerability in Thread, affecting Google and MediaTek products including Matter, MT7931, and MT7933. This flaw, stemming from a missing bounds check, allows for remote escalation of privilege without user interaction or additional execution privileges. With a CVSS score of 9.8, it presents a severe risk of complete compromise (confidentiality, integrity, availability). Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.4CPE matchmatch criteria | cpe:2.3:a:google:matter:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.