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Servers and applications

CVE-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 user interaction.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 21 Aug 2023.

Severity
Critical 9.8
Published
23 Mar 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Adobe ColdFusionServers and applications · cpe:a:adobe:coldfusion
  • Version 2021-update5
  • Version 2021-update4
  • Version 2021-update3
  • Version 2021-update2
All 22 release lines
  • Version 2018
  • Version 2018-update1
  • Version 2018-update2
  • Version 2018-update3
  • Version 2018-update4
  • Version 2018-update5
  • Version 2018-update6
  • Version 2018-update7
  • Version 2018-update8
  • Version 2018-update9
  • Version 2018-update10
  • Version 2018-update11
  • Version 2018-update12
  • Version 2018-update13
  • Version 2018-update14
  • Version 2018-update15
  • Version 2021
  • Version 2021-update1
  • Version 2021-update2
  • Version 2021-update3
  • Version 2021-update4
  • Version 2021-update5

Known exploited

CISA name
Adobe ColdFusion Deserialization of Untrusted Data Vulnerability
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due for US agencies
11 Sept 2023
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-26359
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-26359