High-severity remote code injection in Adobe ColdFusion, an enterprise web application platform; enables remote arbitrary code execution and broad compromise.
CVE-2026-105903
ColdFusion code injection allows remote arbitrary code execution (no user interaction).
Is CVE-2026-105903 being exploited?
Not confirmed. CVE-2026-105903 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 0.50% probability of exploitation in the next 30 days.
How severe is CVE-2026-105903?
CVE-2026-105903 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-2026-105903?
Yes. A fix has been recorded for CVE-2026-105903. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-105903 affect?
CVE-2026-105903 affects Adobe ColdFusion, ColdFusion Server (see vendor advisory for affected versions). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-105903?
Apply Adobe ColdFusion security update immediately; restrict access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via code injection as the application user; can escalate scope and enable full system compromise.
Immediate action required
- affected<= 2023.0.25
- affected<= 2025.0.13
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.