Critical remote command execution in a widely deployed enterprise FTP server (Progress WS_FTP) enabling full system compromise; broadly relevant to enterprise IT and security teams.
CVE-2026-90868
OS command injection in Progress WS_FTP Server allowing remote arbitrary command execution.
Is CVE-2026-90868 being exploited?
Not confirmed. CVE-2026-90868 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-90868?
CVE-2026-90868 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-90868?
Yes. A fix has been recorded for CVE-2026-90868. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-90868 affect?
CVE-2026-90868 affects Progress WS_FTP Server (Windows) versions prior to 2024.0.7, Progress WS_FTP Server (Windows) versions prior to 2025.0.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-90868?
Upgrade to 2024.0.7 or 2025.0.4+ immediately; restrict access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attackers can execute arbitrary OS commands as the server user, leading to system compromise, data access, persistence, and lateral movement.
Immediate action required
- affected< 2024.0.7
- affected< 2025.0.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.