MediaTekCVE-2026-20501
MediaTek chipset: out-of-bounds write
High8.4CVE-2026-20501 · Published Sep 7, 2026 · updated Sep 9, 2026
In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MediaTek chipset Product | <= MT2718 | No fix yet |
| <= MT6580 | No fix yet | |
| <= MT6739 | No fix yet | |
| <= MT6761 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity from
- CISA (its enrichment of the CVE record)
- Weakness
- CWE-122
More MediaTek advisories
All MediaTek| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 7 | MediaTek chipset: information disclosure | Medium4.4 | No fix yet |
| Sep 7 | MediaTek chipset: information disclosure | Medium4.4 | No fix yet |
| Sep 7 | MediaTek chipset: use after free | Medium5.5 | No fix yet |
| Sep 7 | MediaTek chipset: privilege escalation | Medium5.5 | No fix yet |
| Sep 7 | MediaTek chipset: privilege escalation | Medium6.7 | No fix yet |
| Sep 7 | MediaTek chipset: information disclosure | Medium4.4 | No fix yet |