Quick answers
- Is CVE-2026-102149 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102149 being exploited in the wild.
- How severe is CVE-2026-102149?
- Critical severity, with a CVSS score of 9.4, published 30 September 2026.
- Which products and versions are affected?
- Kiteworks Email Protection Gateway before 9.5.1.
- Is there a fix for CVE-2026-102149?
- 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-2026-102149 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-102149?
- Check whether you run Kiteworks Email Protection Gateway at an affected version. 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 Email Protection Gateway fails to properly validate which account a certificate can be assigned to, allowing an attacker to associate arbitrary certificates with other user accounts via a network request. This is a missing authentication/authorization check (CWE-306, CWE-639) exploitable without authentication or user interaction. An attacker can compromise confidentiality and integrity of encrypted mail or achieve account takeover if cert-based authentication is in use.
Affected products
- Kiteworks Email Protection Gateway before 9.5.1
Timeline
- 2026-09-30: disclosed