How severe is CVE-2021-40699?

CVE-2021-40699 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-40699 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40699?

CVE-2021-40699 primarily affects Adobe Coldfusion. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40699?

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-2021-40699 published?

CVE-2021-40699 was published on 2023-09-07 and last updated on 2026-06-17.

CVE-2021-40699

CVE-2021-40699 is a high-severity vulnerability in Adobe Coldfusion with a CVSS 3.x base score of 7.4. 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Adobe Coldfusion
Published: 2023-09-07
Last modified: 2026-06-17

Description

ColdFusion version 2021 update 1 (and earlier) and versions 2018.10 (and earlier) are impacted by an improper access control vulnerability when checking permissions in the CFIDE path. An authenticated attacker could leverage this vulnerability to access and manipulate arbitrary data on the environment.

Frequently asked questions

What is CVE-2021-40699?: ColdFusion version 2021 update 1 (and earlier) and versions 2018.10 (and earlier) are impacted by an improper access control vulnerability when checking permissions in the CFIDE path. An authenticated attacker could leverage this vulnerability to access and manipulate arbitrary data on the environment.
How severe is CVE-2021-40699?: CVE-2021-40699 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-40699 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40699?: CVE-2021-40699 primarily affects Adobe Coldfusion. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40699?: 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-2021-40699 published?: CVE-2021-40699 was published on 2023-09-07 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/coldfusion/apsb21-75.html

Affected products (13)

cpe:2.3:a:adobe:coldfusion:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:-:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update1:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update10:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update2:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update3:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update4:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update5:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update6:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update7:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update8:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2018:update9:*:*:*:*:*:*
cpe:2.3:a:adobe:coldfusion:2021:-:*:*:*:*:*:*

More vulnerabilities in Adobe Coldfusion

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2025-54261 — Critical (CVSS 10.0): ColdFusion versions 2025.3, 2023.15, 2021.21 and earlier are affected by an Improper Limitation of a Pathname to a…

All CVEs affecting Adobe Coldfusion →

Other CWE-284 (Improper Access Control) vulnerabilities

CVE-2026-50746 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi…
CVE-2026-46978 — Critical (CVSS 10.0): Vulnerability in the Oracle Solaris product of Oracle Systems (component: Remote Administration Daemon). The…
CVE-2026-35308 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party Jars).…
CVE-2026-35307 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that…
CVE-2026-46695 — Critical (CVSS 10.0): Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers…
CVE-2026-46840 — Critical (CVSS 10.0): Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are…

Browse all CWE-284 (Improper Access Control) vulnerabilities →