Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

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• cpe adobe/coldfusion2018
• vendor Adobe ColdFusionversion unspecified

How to fix CVE-2023-26359

• Recommended remediation

  Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Sep 11, 2023.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 23, 2023 · Catalog

   Detected

   Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.

2. Aug 21, 2023 · CISA KEV

   Known exploited

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

3. Sep 11, 2023 · CISA KEV

   Remediation due

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

4. Jun 16, 2026 · Catalog

   Updated

   Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction.

Sources

• CISA KEVConfirmed exploitationCVE-2023-26359

  Adobe ColdFusion contains a deserialization of untrusted data vulnerability that could result in code execution in the context of the current user.

  cisa.gov
• CVE.orgVulnerability recordCVE-2023-26359

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2023-26359

  30-day exploitation probability 17.0%

  first.org
• NIST NVDVulnerability recordCVE-2023-26359

  Adobe ColdFusion versions 2018 Update 15 (and earlier) and 2021 Update 5 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require u

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2023-26359

  Adobe ColdFusion contains a deserialization of untrusted data vulnerability that could result in code execution in the context of the current user.

  vulncheck.com

References

• CISA note · helpx.adobe.com
• CISA note · nvd.nist.gov
• Third Party Advisory · cisa.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · fortiguard.com
• VulnCheck exploitation evidence · fortiguard.com
• VulnCheck exploitation evidence · labs.greynoise.io

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.