CVE-2026-20452

In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.

Published: 2026-06-01 Last update: 2026-06-01 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-20452 is rated Low Risk (34/100): CVSS High severity, with low exploitation likelihood (EPSS 0.02%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-20452

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-01 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-20452

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-20452

GitHub Security Advisory for CVE-2026-20452

GHSA-mfvp-3qw7-v5gw · Severity: high — In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This...

Affected software / configurations for CVE-2026-20452

Vendor Product Version Raw CPE
mediatek mt6890_firmware — cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:*
mediatek mt7615_firmware — cpe:2.3:o:mediatek:mt7615_firmware:-:*:*:*:*:*:*:*
mediatek mt7915_firmware — cpe:2.3:o:mediatek:mt7915_firmware:-:*:*:*:*:*:*:*
mediatek mt7916_firmware — cpe:2.3:o:mediatek:mt7916_firmware:-:*:*:*:*:*:*:*
mediatek mt7981_firmware — cpe:2.3:o:mediatek:mt7981_firmware:-:*:*:*:*:*:*:*
mediatek mt7986_firmware — cpe:2.3:o:mediatek:mt7986_firmware:-:*:*:*:*:*:*:*
mediatek mt7990_firmware — cpe:2.3:o:mediatek:mt7990_firmware:-:*:*:*:*:*:*:*
mediatek mt7992_firmware — cpe:2.3:o:mediatek:mt7992_firmware:-:*:*:*:*:*:*:*
mediatek mt7993_firmware — cpe:2.3:o:mediatek:mt7993_firmware:-:*:*:*:*:*:*:*

References for CVE-2026-20452

cvelogic Threat Intelligence