Is CVE-2023-26359 in the CISA KEV catalog?

Yes. CVE-2023-26359 is on the CISA Known Exploited Vulnerabilities list, added 2023-08-21.

What is the CVSS severity of CVE-2023-26359?

CVE-2023-26359 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-26359?

CVE-2023-26359 has an EPSS score of 17.94% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2023-26359

CRITICALCISA KEVEPSS 97th pctl

9.8

CVSS v3

NVD

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.

CWE-502Deserialization of Untrusted Data

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

17.94%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

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

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

Remediation due: 2023-09-11

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-23.