ColdFusion 2025: Use of Hard-coded Cryptographic Key
CVE-2026-34635 is a high-severity use of hard-coded cryptographic key vulnerability in ColdFusion 2025 from Adobe, with a CVSS 3.1 base score of 8.4 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. Affected ColdFusion 2025 versions: 2025.0.11 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.25% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of ColdFusion 2025 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on helpx.adobe.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Adobe | ColdFusion 2025 | 2025.0.11 and earlier | Not stated |
| Adobe | ColdFusion 2023 | 2023.0.22 and earlier | Not stated |
| Adobe | Coldfusion | 2023; 2025 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N. Scored by CNA (adobe.com).
Official description
is affected by a Use of Hard-coded Cryptographic Key vulnerability that could result in a Security feature bypass. A low-privileged attacker could leverage this vulnerability to bypass security measures and gain unauthorized read and write access. Exploitation of this issue does not require user interaction. Scope is changed.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Hard-coded Cryptographic Key
The product uses a hard-coded, unchangeable cryptographic key.
How developers prevent this class of flaw
- Prevention schemes mirror that of hard-coded password storage.
More Use of Hard-coded Cryptographic Key vulnerabilities (CWE-321)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in ColdFusion 2025
- 9.3 Critical severity
- 7.1 High severity
- 7.5 High severity
- 8.4 High severity
- 9.6 Critical severity
- 7.6 High severity
Recent Use of Hard-coded Cryptographic Key vulnerabilities
- 7.9 High severity
- 8.5 High severity
- 8.8 High severity
- 8.1 High severity
- 9.1 Critical severity
- 9.1 Critical severity
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