TI-2026-83740 Aliases CVE-2026-68591 GHSA-fxcx-w8fx-4xxh

Permission bypass in MediaTek modem allows local privilege escalation

LOW 30CWE-732Published 2026-11-02 · Updated 2026-11-03

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

MediaTek chipsets MT2737, MT6813, MT6815, MT6835, MT6878 and other models are affected. A permissions bypass in the modem lets code gain higher privileges (CWE-732). A local attacker who already holds System privilege can escalate privileges without user interaction, with a total impact on confidentiality, integrity and availability.

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

Description from the CNA

In Modem, there is a possible escalation of privilege due to a permissions bypass. This could lead to local escalation of privilege (EoP) if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS09608864 / ALPS09327759; Issue ID: MSV-2958.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0011 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	MT2737; MT6813; MT6815; MT6835; MT6878; MT6879; MT6886; MT6895; MT6896; MT6897; MT6980; MT6983; MT6985; MT6990; MT8676; MT8755; MT8775; MT8792; MT8798; MT8863; MT8873; MT8883	—	No fix listed	CNA

MediaTek chipset VendorMediaTek Affected MT2737; MT6813; MT6815; MT6835; MT6878; MT6879; MT6886; MT6895; MT6896; MT6897; MT6980; MT6983; MT6985; MT6990; MT8676; MT8755; MT8775; MT8792; MT8798; MT8863; MT8873; MT8883 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-2026-68591
2026-11-02 Alias added: GHSA-fxcx-w8fx-4xxh
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