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TI-2026-16620 Aliases CVE-2026-20477GHSA-9jxv-qr96-p4v6

Out-of-bounds write in MediaTek chipset

Priority LOW 28CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
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

In display, there is a possible out of bounds write due to a missing bounds check. 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: ALPS11009963; Issue ID: MSV-7658.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00166 5th 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 chipsetMT6991; MT6993; MT8188; MT8189; MT8668; MT8676; MT8678; MT8781; MT8799; MT8910—No fix listedCNA
  • MediaTek chipset VendorMediaTek Affected MT6991; MT6993; MT8188; MT8189; MT8668; MT8676; MT8678; MT8781; MT8799; MT8910 Fixed in — No fix listed CNA

CPE configurations NVD · 20

CPEVersionsRoleVendor
cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
  • cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
Show 10 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMediaTek
cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:*not specified by NVDRunning onMediaTek
  • cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
  • cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
  • cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20477
  2. 2026-10-03 Alias added: GHSA-9jxv-qr96-p4v6

References

Advisory 1

  • TI-2026-16576 Out-of-bounds write in MediaTek chipset CVSS 3.1HIGH 8.8
  • TI-2026-16643 Heap-based buffer overflow in MediaTek chipset CVSS 3.1HIGH 8.4
  • TI-2026-16642 Heap-based buffer overflow in MediaTek chipset CVSS 3.1HIGH 8.4
  • TI-2026-67566 Privilege escalation in MediaTek Video HAL from missing bounds check CVSS 3.1HIGH 8.4
  • TI-2026-16575 Out-of-bounds write in MediaTek chipset CVSS 3.1HIGH 8.0
  • TI-2026-16626 Missing authorization in MediaTek chipset CVSS 3.1HIGH 7.7
See all 45 →

Sources

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