What is CVE-2023-26359?

CVE-2023-26359 is a critical-severity vulnerability in Adobe Coldfusion, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-03-23.

How severe is CVE-2023-26359?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-26359 known to be exploited?

Yes. CVE-2023-26359 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-08-21), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.

Deserialization in Adobe Coldfusion

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. Expl…

Vulnerability class: Insecure Deserialization

EPSS: 0.791 (99.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Adobe Coldfusion — versions unspecified

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-08-21. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-09-11.

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

Public proof-of-concept exploits

References

helpx.adobe.com/security/products/coldfusion/apsb23-25.html

Frequently asked questions

What is CVE-2023-26359?: CVE-2023-26359 is a critical-severity vulnerability in Adobe Coldfusion, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2023-03-23.
How severe is CVE-2023-26359?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-26359 known to be exploited?: Yes. CVE-2023-26359 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-08-21), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.