Unauthenticated RCE in widely deployed Adobe ColdFusion; potential for rapid, widespread disruption.
CVE-2026-48276
Unrestricted file upload enables remote code execution in ColdFusion.
Is CVE-2026-48276 being exploited?
Not confirmed. CVE-2026-48276 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 1.3% probability of exploitation in the next 30 days.
How severe is CVE-2026-48276?
CVE-2026-48276 is rated Critical with a CVSS score of 10. 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-2026-48276?
Yes. A fix has been recorded for CVE-2026-48276. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-48276 affect?
CVE-2026-48276 affects Adobe ColdFusion (versions 2025.9, 2023.20 and earlier). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-48276?
Patch/upgrade when available; implement strict file-type checks and upload controls.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated RCE via dangerous file upload; attacker can run arbitrary code on CF server.
Patch when possible
- affected<= 20
- affected<= 9
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.