Quick answers
- Is CVE-2026-90869 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-90869 being exploited in the wild.
- How severe is CVE-2026-90869?
- High severity, with a CVSS score of 7.5, published 29 October 2026.
- Which products and versions are affected?
- Progress Software WS FTP Server prior to 2024.0.7 and prior to 2025.0.4.
- Is there a fix for CVE-2026-90869?
- Yes: fixed in WS_FTP Server 2024.0.7, 2025.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-90869 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-90869?
- Check whether you run Progress Software WS FTP Server 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.
How to fix
- Fixed in: WS_FTP Server 2024.0.7, 2025.0.4
Technical details
The vulnerability allows a remote attacker to terminate the SSH service by leveraging knowledge of a valid enrolled SSH public key. Attack requires network access and knowledge of an existing enrolled key, but no additional authentication beyond SSH key possession. Successful exploitation results in denial of service for all SSH connections to the affected WS_FTP Server.
Affected products
- Progress Software WS_FTP Server prior to 2024.0.7 and prior to 2025.0.4
Timeline
- 2026-10-29: disclosed