MediaTekCVE-2026-20493
MediaTek chipset: out-of-bounds write
Medium4.4CVE-2026-20493 · Published Aug 3, 2026 · updated Aug 19, 2026
In wifi, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: BORA00154903; Issue ID: MSV-7575.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MediaTek chipset Product | <= MT6890 | No fix yet |
| <= MT6988 | No fix yet | |
| <= MT6990 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:H/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: out-of-bounds write | Medium5.5 | No fix yet |
| Aug 3 | MediaTek chipset: race condition | Medium5.5 | 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 |