MediaTekCVE-2026-20491
MediaTek chipset: out-of-bounds write
Medium5.5CVE-2026-20491 · Published Aug 3, 2026 · updated Aug 19, 2026
In med, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10981478 (Note: For MT6890, MT6990, MT6988) / AUTO00851173 (Note: For MT2735, MT2737); Issue ID: MSV-7652.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MediaTek chipset Product | <= MT2735 | No fix yet |
| <= MT2737 | No fix yet | |
| <= MT6890 | No fix yet | |
| <= MT6988 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity from
- CISA (its enrichment of the CVE record)
- Weakness
- CWE-787
More MediaTek advisories
All MediaTek| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 3 | MediaTek chipset: privilege escalation | Medium6.0 | No fix yet |
| Aug 3 | MediaTek chipset: out-of-bounds read | Medium4.4 | No fix yet |
| Aug 3 | MediaTek chipset: race condition | Medium5.5 | No fix yet |
| Aug 3 | MediaTek chipset: out-of-bounds write | Medium4.4 | No fix yet |
| Aug 3 | MediaTek chipset: out-of-bounds read | Medium5.5 | No fix yet |
| Aug 3 | MediaTek chipset: privilege escalation | High7.8 | No fix yet |