CVE-2025-66480
CRITICAL RCE via unsanitized file upload in Wildfire IM im-server (/fs)
Is CVE-2025-66480 being exploited?
Not confirmed. CVE-2025-66480 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 1.4% probability of exploitation in the next 30 days.
How severe is CVE-2025-66480?
CVE-2025-66480 is rated Critical with a CVSS score of 9.8. 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-2025-66480?
Yes. A fix has been recorded for CVE-2025-66480. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-66480 affect?
CVE-2025-66480 affects Wildfire IM im-server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-66480?
Upgrade to 1.4.3+; apply patch and sanitize uploads.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Path traversal during upload allows arbitrary file writes; attacker can achieve RCE and full server compromise.
Immediate action required
- affected< 1.4.3
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.