Improper input validation in Adobe Coldfusion
CVE-2026-21273
is affected by an Improper Input Validation vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain unauthorized read and write access. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (57.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.004
Affected products
- Adobe Coldfusion — versions 2023, 2025
- Adobe Coldfusion 2023 — versions 0, 2023.0.23
- Adobe Coldfusion 2025 — versions 0, 2025.0.12
Weakness classification (CWE)
References
- helpx.adobe.com/security/products/coldfusion/apsb26-90.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21273?
- CVE-2026-21273 is a high-severity vulnerability in Adobe Coldfusion, classified under Improper Input Validation. CVSS score: 8.7/10. Published 2026-08-11.
- How severe is CVE-2026-21273?
- High severity. CVSS v3 base score is 8.7 out of 10.