CVE-2025-26787

MEDIUM EPSS 3.0%
Published Dec 22, 20256mo ago · Modified Jun 17, 20262w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Dec 22, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

Description

An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin CLI command used to configure Certificate access to the initial startup of the container sets a property of "allowany" to allow any user with a valid and trusted client auth certificate to connect. Admins can then set more restricted access to specific certificates. A logic error caused this admin CLI command to be run on each restart of the container instead of only the first startup as intended resetting the configuration to "allowany".

CVSS Details

Base Score
4.7
Exploitability
1.2
Impact
3.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
3.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-642

Affected Products 1

VendorProductVersionRange
keyfactorsignserver* <7.2

References 2

  • docs.keyfactor.com https://docs.keyfactor.com/signserver/latest/signserver-7-2-release-notes
    Release Notes
  • support.keyfactor.com https://support.keyfactor.com/hc/en-us/articles/33997706776987-SignServer-security-advisory-Container-vulnerability-CVE-2025-26787-fixed-in-version-7-2
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.