Quick answers
- Is CVE-2026-93635 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93635 being exploited in the wild.
- How severe is CVE-2026-93635?
- Medium severity, with a CVSS score of 5.3, published 14 October 2026.
- Which products and versions are affected?
- Zimbra Collaboration Suite 10.1.0 through 10.1.21.
- Is there a fix for CVE-2026-93635?
- 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-2026-93635 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-93635?
- Check whether you run Zimbra Collaboration Suite 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
LDAP filter injection in the external LDAP search component allows unauthenticated attackers to modify filter logic. The vulnerability affects domains configured with search-filter authentication and lazy provisioning, where it serves as a password oracle; authenticated S/MIME certificate lookups are also affected and can leak directory entries and identity data beyond the intended target. No public fix is currently listed.
Affected products
- Zimbra Collaboration Suite 10.1.0 through 10.1.21
Timeline
- 2026-10-14: disclosed