How severe is CVE-2023-26347?

CVE-2023-26347 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-26347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26347?

CVE-2023-26347 primarily affects Adobe Coldfusion. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-26347?

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

When was CVE-2023-26347 published?

CVE-2023-26347 was published on 2023-11-17 and last updated on 2026-06-17.

CVE-2023-26347

CVE-2023-26347 is a high-severity vulnerability in Adobe Coldfusion with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Adobe Coldfusion
Published: 2023-11-17
Last modified: 2026-06-17

Description

Adobe ColdFusion versions 2023.5 (and earlier) and 2021.11 (and earlier) are affected by an Improper Access Control vulnerability that could result in a Security feature bypass. An unauthenticated attacker could leverage this vulnerability to access the administration CFM and CFC endpoints. Exploitation of this issue does not require user interaction.

Frequently asked questions

What is CVE-2023-26347?: Adobe ColdFusion versions 2023.5 (and earlier) and 2021.11 (and earlier) are affected by an Improper Access Control vulnerability that could result in a Security feature bypass. An unauthenticated attacker could leverage this vulnerability to access the administration CFM and CFC endpoints. Exploitation of this issue does not require user interaction.
How severe is CVE-2023-26347?: CVE-2023-26347 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-26347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26347?: CVE-2023-26347 primarily affects Adobe Coldfusion. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-26347?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-26347 published?: CVE-2023-26347 was published on 2023-11-17 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/coldfusion/apsb23-52.html

Affected products (19)

cpe:2.3:a:adobe:coldfusion:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update10:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update11:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update6:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update7:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update8:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:update9:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2023:update1:*:*:*:*:*:*
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:*:*:*:*:*:*

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