Quick answers
- Is CVE-2026-20553 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20553 being exploited in the wild.
- How severe is CVE-2026-20553?
- Informational severity, published 2 November 2026.
- Which products and versions are affected?
- MediaTek Dimensity 5G; MediaTek Helio 4G; MediaTek Genio IoT; MediaTek Kompanio.
- Is there a fix for CVE-2026-20553?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-20553 attacked?
- It is attacked with physical access.
- Am I affected by CVE-2026-20553?
- Check whether you run MediaTek Dimensity 5G, MediaTek Genio IoT, MediaTek Helio 4G or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An out-of-bounds write vulnerability exists in MediaTek's DA component due to missing bounds checking, allowing local privilege escalation. The vulnerability requires physical access to the device and no additional execution privileges. The flaw enables memory corruption that leads to elevated privilege levels on the affected chipset.
Affected products
- MediaTek Dimensity 5G
- MediaTek Helio 4G
- MediaTek Genio IoT
- MediaTek Kompanio
Timeline
- 2026-11-02: disclosed