MediaTekCVE-2026-20503
MediaTek chipset: denial of service
Medium5.3CVE-2026-20503 · Published Sep 7, 2026 · updated Sep 9, 2026
In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01371002; Issue ID: MSV-9020.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MediaTek chipset Product | <= MT2716 | No fix yet |
| <= MT2735 | No fix yet | |
| <= MT2737 | No fix yet | |
| <= MT6813 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- CISA (its enrichment of the CVE record)
- Weakness
- CWE-617
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 |