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CVE-2026-20418

CRITICAL
9.8
CVSS 3.1
Description
In Thread, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00465153; Issue ID: MSV-4927.

Metadata

CVE ID
CVE-2026-20418
State
PUBLISHED
Assigner
MediaTek
Reserved
2025-11-03 01:30 UTC
Published
2026-02-02 08:15 UTC
Last updated
2026-03-30 13:03 UTC
Primary CWE
CWE-787
CWE-787 Out-of-bounds Write
Vendor / Product
MediaTek, Inc. / MediaTek chipset
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
MediaTek, Inc. MediaTek chipset — MT7931, MT7933
Weakness (CWE)
CWESourceDescription
CWE-787 cna CWE-787 Out-of-bounds Write
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 adp CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (1)
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