Quick answers
- Is CVE-2026-20552 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20552 being exploited in the wild.
- How severe is CVE-2026-20552?
- Informational severity, published 2 November 2026.
- Which products and versions are affected?
- MediaTek MT6880; MediaTek MT6890; MediaTek MT6813; MediaTek MT6986; and 4 more.
- Is there a fix for CVE-2026-20552?
- 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-2026-20552 attacked?
- It is attacked over the network or from the adjacent network, in device firmware.
- Am I affected by CVE-2026-20552?
- Check whether you run MediaTek MT2735, MediaTek MT2737, MediaTek MT6813 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
The ccci (Cross Core Communication Interface) component lacks proper input validation on buffer writes, allowing an out-of-bounds write condition. The vulnerability is triggered remotely and requires user interaction but needs no special privileges. Successful exploitation leads to denial of service; patches are available for affected chipsets.
Affected products
- MediaTek MT6880
- MediaTek MT6890
- MediaTek MT6813
- MediaTek MT6986
- MediaTek MT6982
- MediaTek MT6980D
- MediaTek MT2735
- MediaTek MT2737
Timeline
- 2026-11-02: disclosed