How severe is CVE-2017-3066?

CVE-2017-3066 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-3066 being actively exploited?

Yes. CVE-2017-3066 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-02-24, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2017-3066?

CVE-2017-3066 primarily affects Adobe Coldfusion. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-3066?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2017-3066 have an EU (EUVD) identifier?

Yes. CVE-2017-3066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-12207. It is also flagged as exploited in the EUVD (since 2025-02-24).

When was CVE-2017-3066 published?

CVE-2017-3066 was published on 2017-04-27 and last updated on 2026-06-17.

CVE-2017-3066

CVE-2017-3066 is a critical-severity vulnerability in Adobe Coldfusion with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-02-24). The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 91% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-02-24)
EU (EUVD) id: EUVD-2017-12207
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-02-24)
Weakness: CWE-502
Affected product: Adobe Coldfusion
Published: 2017-04-27
Last modified: 2026-06-17

Description

Adobe ColdFusion 2016 Update 3 and earlier, ColdFusion 11 update 11 and earlier, ColdFusion 10 Update 22 and earlier have a Java deserialization vulnerability in the Apache BlazeDS library. Successful exploitation could lead to arbitrary code execution.

Frequently asked questions

What is CVE-2017-3066?: Adobe ColdFusion 2016 Update 3 and earlier, ColdFusion 11 update 11 and earlier, ColdFusion 10 Update 22 and earlier have a Java deserialization vulnerability in the Apache BlazeDS library. Successful exploitation could lead to arbitrary code execution.
How severe is CVE-2017-3066?: CVE-2017-3066 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-3066 being actively exploited?: Yes. CVE-2017-3066 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-02-24, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2017-3066?: CVE-2017-3066 primarily affects Adobe Coldfusion. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-3066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2017-3066 have an EU (EUVD) identifier?: Yes. CVE-2017-3066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-12207. It is also flagged as exploited in the EUVD (since 2025-02-24).
When was CVE-2017-3066 published?: CVE-2017-3066 was published on 2017-04-27 and last updated on 2026-06-17.

References

Affected products (39)

cpe:2.3:a:adobe:coldfusion:10.0:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update10:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update11:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update12:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update13:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update14:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update15:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update16:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update17:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update18:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update19:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update20:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update21:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update22:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update6:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update7:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update8:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:10.0:update9:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update10:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update11:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update6:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update7:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update8:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:11.0:update9:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2016:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2016:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2016:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2016:update3:*:*:*:*:*:*

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