How severe is CVE-2026-27304?

CVE-2026-27304 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-27304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27304?

CVE-2026-27304 primarily affects Adobe Coldfusion. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-27304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-27304 have an EU (EUVD) identifier?

Yes. CVE-2026-27304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22730.

When was CVE-2026-27304 published?

CVE-2026-27304 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-27304

CVE-2026-27304 is a critical-severity vulnerability in Adobe Coldfusion with a CVSS 3.x base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22730
Weakness: CWE-20
Affected product: Adobe Coldfusion
Published: 2026-04-14
Last modified: 2026-06-17

Description

ColdFusion versions 2023.18, 2025.6 and earlier are affected by an Improper Input Validation vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.

Frequently asked questions

What is CVE-2026-27304?: ColdFusion versions 2023.18, 2025.6 and earlier are affected by an Improper Input Validation vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.
How severe is CVE-2026-27304?: CVE-2026-27304 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-27304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27304?: CVE-2026-27304 primarily affects Adobe Coldfusion. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-27304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-27304 have an EU (EUVD) identifier?: Yes. CVE-2026-27304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22730.
When was CVE-2026-27304 published?: CVE-2026-27304 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/coldfusion/apsb26-38.html

Affected products (26)

cpe:2.3:a:adobe:coldfusion:2023:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update10:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update11:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update12:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update13:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update14:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update15:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update16:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update17:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update18:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update6:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update7:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update8:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update9:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2025:update6:*:*:*:*:*:*

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