CVE-2025-66203
RCE in StreamVault via unvalidated admin config inputs at /admin/api/saveConfig.
Is CVE-2025-66203 being exploited?
Not confirmed. CVE-2025-66203 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. EPSS currently estimates a 0.76% probability of exploitation in the next 30 days.
How severe is CVE-2025-66203?
CVE-2025-66203 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-2025-66203?
Yes. A fix has been recorded for CVE-2025-66203. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-66203 affect?
CVE-2025-66203 affects StreamVault SpiritApplication. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-66203?
Upgrade to v251126 or later to fix.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via unvalidated admin config; executes arbitrary commands as the StreamVault process user.
Immediate action required
- affected< 251126
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.