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TI-2026-83699 Aliases CVE-2026-20558GHSA-7jqx-wgvj-w3fp

Use after free in MediaTek GPU pdma enables privilege escalation

Priority LOW 37CWE-416Published · Updated

Key facts

Attack vector
Local
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-416 and the CVSS impact.

Summary

MediaTek chipsets MT6993 and MT8910 are affected. A use after free flaw (CWE-416) in the GPU pdma component lets a local user with no extra execution privileges escalate privileges. User interaction is not needed for exploitation.

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

Description from the CNA

In GPU pdma, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11365070; Issue ID: MSV-9547.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00146 3rd 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
MediaTekMediaTek chipsetMT6993; MT8910—No fix listedCNA
  • MediaTek chipset VendorMediaTek Affected MT6993; MT8910 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

  1. 2026-11-02 Threatist record created from CVE-2026-20558
  2. 2026-11-02 Alias added: GHSA-7jqx-wgvj-w3fp
  3. 2026-11-02 CVSS score added · CISA ADP
  4. 2026-11-02 CISA SSVC decision points changed
  5. 2026-11-03 CISA SSVC decision points changed

References

Other 1

  • 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