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TI-2025-14781 Aliases CVE-2025-20712GHSA-gj4q-mh9x-v34v

Heap-based buffer overflow in MediaTek MT6990, MT7990, MT7991, MT7992, MT7993

Priority MEDIUM 40CWE-122Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00422323; Issue ID: MSV-3810.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MediaTekMT6990, MT7990, MT7991, MT7992, MT7993SDK release 8.3.1.1 and before / OpenWrt 21.02, 23.05 (MT6990)—No fix listedCNA
  • MT6990, MT7990, MT7991, MT7992, MT7993 VendorMediaTek Affected SDK release 8.3.1.1 and before / OpenWrt 21.02, 23.05 (MT6990) Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*up to 8.3.1.1VulnerableMediaTek
cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:h:mediatek:mt7990:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:h:mediatek:mt7991:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:h:mediatek:mt7992:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:h:mediatek:mt7993:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*21.02.0Vulnerableopenwrt
cpe:2.3:o:openwrt:openwrt:23.05:*:*:*:*:*:*:*23.05Vulnerableopenwrt
  • cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:* Versions up to 8.3.1.1 Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:h:mediatek:mt7990:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:h:mediatek:mt7991:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:h:mediatek:mt7992:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:h:mediatek:mt7993:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:* Versions 21.02.0 Vulnerable ·openwrt
  • cpe:2.3:o:openwrt:openwrt:23.05:*:*:*:*:*:*:* Versions 23.05 Vulnerable ·openwrt

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-20712
  2. 2026-10-03 Alias added: GHSA-gj4q-mh9x-v34v

References

Advisory 1

  • TI-2024-13053 Improper input validation in MediaTek MT6890, MT7915, MT7916, MT7981, MT7986 CVSS 3.1CRITICAL 9.8
  • TI-2025-14754 Out-of-bounds write in MediaTek MT7615, MT7622, MT7663 CVSS 3.1CRITICAL 9.8
  • TI-2025-14753 Out-of-bounds write in MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981… CVSS 3.1CRITICAL 9.8
  • TI-2025-14752 Out-of-bounds write in MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981… CVSS 3.1CRITICAL 9.8
  • TI-2025-14751 Out-of-bounds write in MediaTek MT6890, MT7615, MT7622, MT7663, MT7915 CVSS 3.1CRITICAL 9.8
  • TI-2025-14745 Incorrect authorization in MediaTek MT6890, MT6990, MT7915, MT7916, MT7981, MT7986… CVSS 3.1CRITICAL 9.8
See all 70 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences