CVE-2026-84295, Progress WS_FTP Server: an unauthenticated remote authentication flaw can expose administrative credentials (CVSS 10.0), with two more unauthenticated flaws, fixed in 2025.0.4 and 2024.0.7; no exploitation found
Progress WS_FTP Server: unauthenticated CVSS 10.0 flaw can expose admin credentials; fixed in 2025.0.4 and 2024.0.7
Defender actions
- Upgrade every WS_FTP Server on Windows to 2024.0.7 or 2025.0.4 now, partner-facing and internet-reachable instances first, and rotate its administrator credentials afterwards, because CVE-2026-84295 can expose them to an unauthenticated attacker and the upgrade does not change what was already read; an instance on an unsupported branch gets no patch from Progress, so take it off the network or migrate it.
Analysis
Progress, as CNA, published CVE-2026-84295 on 2026-10-29: improper authentication in WS_FTP Server on Windows that "could allow an unauthenticated remote attacker to access sensitive information, including administrative credentials"; its CVSS 3.1 vector is network, low complexity, no privileges and no user interaction, scored 10.0, and the record names no component or endpoint (ENISA EUVD, 2026-10-29). Two further flaws carry an unauthenticated vector with high attack complexity: CVE-2026-90865, an OS command injection that could allow command execution with elevated privileges under certain configurations (9.0) (ENISA EUVD, 2026-10-29), and CVE-2026-90867, improper access control in the Web Admin console that could expose administrative functionality to remote authentication attempts (8.1) (ENISA EUVD, 2026-10-29). CSIRT Italia counts 6 critical and 3 high flaws in the release, of types including authentication bypass, remote code execution and arbitrary file read and write (CSIRT Italia, 2026-10-30).
The record for CVE-2026-84295 names versions before 2024.0.6 and 2025.0.3 as affected (ENISA EUVD, 2026-10-29), and the records for the other two name versions before 2024.0.7 and 2025.0.4 (ENISA EUVD, 2026-10-29), so 2024.0.7 or 2025.0.4 is the build to reach. CSIRT Italia lists 2025.0.3 (10.0.3) and 2024.0.6 (9.0.6) and earlier as affected and says that for unsupported versions the vendor will not release a workaround or patch (translated from Italian) (CSIRT Italia, 2026-10-30). No source reports exploitation: CISA's catalog holds no 2026 WS_FTP flaw, although CVE-2023-40044 in the same product has been listed since 2023-10-05 with known ransomware use (CISA KEV catalog, 2026-10-30).
Cited evidence
Improper authentication in Progress Software WS_FTP Server versions prior to 2024.0.6 and 2025.0.3 on Windows could allow an unauthenticated remote attacker to access sensitive information, including administrative credentials.
An OS command injection vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow arbitrary command execution with elevated privileges under certain configurations.
Improper access control in the Web Admin console of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could expose administrative functionality to remote authentication attempts.
for versions that are no longer supported the vendor will not release any workaround or patch (translated from Italian)
Sources5
AI-generated · no human review · this permalink is the shareable record for the finding · verify operationally critical claims against the linked primary source.