RCE in widely-used enterprise CF server; could disrupt web apps.
CVE-2026-27304
RCE in Adobe ColdFusion due to input validation flaw; no user interaction.
Is CVE-2026-27304 being exploited?
Not confirmed. CVE-2026-27304 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 3.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-27304?
CVE-2026-27304 is rated Critical with a CVSS score of 9.3. 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-2026-27304?
Yes. A fix has been recorded for CVE-2026-27304. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27304 affect?
CVE-2026-27304 affects Adobe ColdFusion 2023.18, 2025.6 and earlier. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27304?
Patch ASAP; apply the latest Adobe ColdFusion update when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution in the current user context via improper input validation.
Immediate action required
- affected<= 18
- affected<= 6
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.