TI-2026-83711 Aliases CVE-2026-20570 GHSA-w4fh-mpfm-65wp

Use after free in MediaTek chipset adsp allows privilege escalation

LOW 30CWE-416Published 2026-11-02 · Updated 2026-11-03

Key facts

Attack vector: Local
Privileges required: High
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-416 and the CVSS impact.

Summary

MediaTek chipsets MT6858, MT6878, MT6881, MT6897, MT6899 and other models are affected. A use after free in adsp (CWE-416) lets code keep using memory after it is freed. An attacker who already holds System privilege on the device can escalate privileges locally, and no user interaction is needed. The impact is total on confidentiality, integrity and availability.

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

Description from the CNA

In adsp, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11431474; Issue ID: MSV-9926.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00117 1st 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	MT6858; MT6878; MT6881; MT6897; MT6899; MT6989; MT6991; MT6993; MT8168; MT8186; MT8188; MT8189; MT8195; MT8196; MT8365; MT8367; MT8390; MT8391; MT8668; MT8678	—	No fix listed	CNA

MediaTek chipset VendorMediaTek Affected MT6858; MT6878; MT6881; MT6897; MT6899; MT6989; MT6991; MT6993; MT8168; MT8186; MT8188; MT8189; MT8195; MT8196; MT8365; MT8367; MT8390; MT8391; MT8668; 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-2026-20570
2026-11-02 Alias added: GHSA-w4fh-mpfm-65wp
2026-11-02 CVSS score added · CISA ADP
2026-11-02 CISA SSVC decision points changed
2026-11-03 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