What’s Vulnerable › Vulnerabilities

CVE-2025-47221

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-13 · updated 2026-06-17
• Weakness: CWE-284

Description

An arbitrary file write was found in Keyfactor SignServer versions prior to 7.3.2. The properties ARCHIVETODISK_FILENAME-PATTERN, ARCHIVETODISK_PATH_BASE, ARCHIVETODISK_PATH_PATTERN can be set to any path, even ones that will point to files that already exist. This vulnerability gives a user with admin access the possibility to write files in arbitrary directories in the server file system and potentially overwrite files accessible by the local user JBoss.

Affected products

• Keyfactor Signserver: before 7.3.1 — fixed in 7.3.1

How to fix

Upgrade to a fixed version: Keyfactor Signserver 7.3.1. Check the vendor advisory for mitigations.

References

• https://docs.keyfactor.com/signserver/latest/signserver-7-3-release-notes
• https://support.keyfactor.com
• https://support.keyfactor.com/hc/en-us/articles/37639116791067-SignServer-CVE-2025-47221-Arbitrary-file-write

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