CVE-2026-20494

Published Aug 3, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In wifi, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10960006 / BORA00155314, BORA00155001, BORA00154907; Issue ID: MSV-7570.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mediatek mt6890
Mediatek mt6890 Firmware
Mediatek mt6988
Mediatek mt6988 Firmware
Mediatek mt6990
Mediatek mt6990 Firmware
CPEs cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6988:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6988_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6990_firmware:-:*:*:*:*:*:*:*
Vendors & Products Mediatek mt6890
Mediatek mt6890 Firmware
Mediatek mt6988
Mediatek mt6988 Firmware
Mediatek mt6990
Mediatek mt6990 Firmware
Type Values Removed Values Added
Title Out‑of‑Bounds Read in MediaTek Wi‑Fi Stack Leading to Local Information Disclosure
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Out‑of‑Bounds Read in MediaTek Wi‑Fi Stack Leading to Local Information Disclosure
Type Values Removed Values Added
First Time appeared Mediatek
Mediatek mediatek Chipset
Vendors & Products Mediatek
Mediatek mediatek Chipset
Type Values Removed Values Added
Description In wifi, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10960006 / BORA00155314, BORA00155001, BORA00154907; Issue ID: MSV-7570.
Weaknesses CWE-125
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
MediaTek
Published
Updated
Aug 3, 2026, 6:57 PM
Reserved
Nov 3, 2025, 1:30 AM
Status
Analyzed
Published
Aug 3, 2026, 3:16 AM
Modified
Oct 23, 2026, 10:10 PM