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CVE-2023-26359

Adobe ColdFusion Deserialization of Untrusted Data

9.8 CRITICALActively exploited (CISA KEV)EPSS 17.0%
  1. Published23 Mar 2023
  2. Added to CISA KEV21 Aug 2023
  3. Remediation due11 Sept 2023
Actively exploited (CISA KEV)

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

Added to KEV: 21 Aug 2023Federal remediation due: 11 Sept 2023

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Adobe Coldfusion2018 · 2021

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-26359 being actively exploited?

Yes. CVE-2023-26359 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 21 Aug 2023.

How severe is CVE-2023-26359?

CVE-2023-26359 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 17.0% probability of exploitation.

Which products are affected by CVE-2023-26359?

Affected products include Adobe Coldfusion.

How do I fix CVE-2023-26359?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-26359 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.