TI-2026-83694 Aliases CVE-2026-20553 GHSA-qcf3-g6w9-4666

Out-of-bounds write in MediaTek DA allows local privilege escalation

LOW 31CWE-787Published 2026-11-02 · Updated 2026-11-02

Key facts

Attack vector: Physical
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-787 and the CVSS impact.

Summary

MediaTek chipsets MT2713, MT2718, MT2737, MT6781, MT6789, and other models are affected by an out-of-bounds write in the DA component caused by a missing bounds check (CWE-787). An attacker with physical access to the device and no additional execution privileges can escalate privilege locally. No user interaction is needed for exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

In DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11468968; Issue ID: MSV-10166.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00191 8th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
MediaTek	MediaTek chipset	MT2713; MT2718; MT2737; MT6781; MT6789; MT6813; MT6835; MT6855; MT6858; MT6878; MT6879; MT6880; MT6881; MT6886; MT6890; MT6895; MT6897; MT6899; MT6982VB; MT6983; MT6985; MT6986; MT6989; MT6990; MT6991; MT8188; MT8189; MT8370; MT8390; MT8676; MT8678	—	No fix listed	CNA

MediaTek chipset VendorMediaTek Affected MT2713; MT2718; MT2737; MT6781; MT6789; MT6813; MT6835; MT6855; MT6858; MT6878; MT6879; MT6880; MT6881; MT6886; MT6890; MT6895; MT6897; MT6899; MT6982VB; MT6983; MT6985; MT6986; MT6989; MT6990; MT6991; MT8188; MT8189; MT8370; MT8390; MT8676; MT8678 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for MediaTek chipset.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Timeline

2026-11-02 Threatist record created from CVE-2026-20553
2026-11-02 Alias added: GHSA-qcf3-g6w9-4666
2026-11-02 CVSS score added · CISA ADP
2026-11-02 CISA SSVC decision points changed

References

Other 1

https://www.mediatek.com/product-security-bulletin/November-2026

TI-2020-00067 Out-of-bounds write in Android KEVCVSS 3.1HIGH 7.8
TI-2024-13053 Improper input validation in MediaTek MT6890, MT7915, MT7916, MT7981, MT7986 CVSS 3.1CRITICAL 9.8
TI-2025-14725 Integer overflow in MediaTek MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886… CVSS 3.1MEDIUM 6.5
TI-2024-13114 Memory corruption in MediaTek MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855… CVSS 3.1CRITICAL 9.8
TI-2022-14283 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8
TI-2021-11684 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8

See all 1133 →

Sources

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