8.2High
Adobe Coldfusion
CVE-2026-21279
is affected by an Improper Input Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized read and limited write access. Exploitation of this issue does not require user interaction.
What this means for your business
- It affects Adobe Coldfusion. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 41% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Adobe Coldfusion, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 8.2 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N- Weakness
- CWE-20
- Assigned by
- psirt@adobe.com
Dates
- Published
- 2026-08-11
- Last modified
- 2026-08-28
- Sources
- NVD
Affected products
- Adobe Coldfusion2023, 2025
As listed in the NVD configuration data. Not a statement about your estate.