Quick answers
- Is CVE-2026-20495 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20495 being exploited in the wild.
- How severe is CVE-2026-20495?
- High severity, with a CVSS score of 7.8, published 3 August 2026.
- Which products and versions are affected?
- MediaTek Bluetooth driver.
- Is there a fix for CVE-2026-20495?
- 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-2026-20495 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-20495?
- Check whether you run MediaTek Bluetooth driver, MediaTek Mt7902, MediaTek Mt7902 Firmware 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 vulnerability is a missing permission check in the MediaTek Bluetooth driver, classified as an authorization bypass. An attacker with local user-level execution privileges can exploit this flaw without requiring user interaction or network access. By bypassing the permission check, an attacker achieves privilege escalation from user to a higher privilege level. The patch ID WCNCR00488300 has been provided, and MediaTek has notified device OEMs of the fix for at least two months before public disclosure.
Affected products
- MediaTek Bluetooth driver
Timeline
- 2026-08-03: disclosed
- 2026-08-03: advisory: MediaTek Product Security Bulletin August 2026