CVE-2026-90869 json
Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server
published 13d ago modified 12d ago also EUVD-2026-113026
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.
Patch / fix
- Progress Software WS_FTP Server 2024.0.7, 2025.0.4
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- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 12d ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Progress Software WS_FTP Server
Classification
References
Sources
- CVE List CVE-2026-90869
- NVD CVE-2026-90869
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