SecuriTricks - CVE-2025-26787

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".

Product(s) Impacted

Product	Versions

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-642

External Control of Critical State Data

The product stores security-critical state information about its users, or the product itself, in a location that is accessible to unauthorized actors.

References

https://docs.keyfactor.com/signserver/latest/signserver-7-2-release-notes

https://support.keyfactor.com/hc/en-us/articles/33997706776987-SignServer-security-advisory-Container-vulnerability-CVE-2025-26787-fixed-in-version-7-2

CVSS Score

4.7 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: HIGH
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

View Vector String

Timeline

Published: Dec. 22, 2025, 7:15 p.m.
Last Modified: Dec. 23, 2025, 2:51 p.m.

Status : Undergoing Analysis

CVE is currently being analyzed by NVD staff, this process results in association of reference link tags, CVSS scores, CWE association, and CPE applicability statements.

More info

Source

cve@mitre.org

CVE-2025-26787