CVE-2025-47222
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
A class name enumeration was found in Keyfactor SignServer versions prior to 7.3.2. Setting any chosen class name to properties requiring a class path causes different errors depending on whether the class exists in the deployment, returning information about loaded classes to the client side.
Risk Assessment
An attacker may obtain information about classes loaded in the application, aiding further reconnaissance and attack planning. This may disclose implementation details and facilitate exploitation of other vulnerabilities.
Recommendation
Update Keyfactor SignServer to version 7.3.2 or later. Until updated, restrict access to configuration interfaces and monitor for suspicious requests.
Other vulnerabilities in Keyfactor SignServer
See all- CVE-2026-25827Low
In Keyfactor SignServer before 7.6.0, several properties were identified to have no restrictions on what path they can be set to by an admin user. Setting these properties to specific file paths can reveal information to the client side. This includes ATTRIBUTESFILE in PKCS11CryptoToken, KEYSTOREPATH in KeyStoreCryptoToken, and TRUSTSTOREPATH in RenewalWorker.
- CVE-2026-25826Medium
In Keyfactor SignServer before 7.6.0, the ATTRIBUTESFILE attribute in PKCS11CryptoToken can be set to a readable file but not an accepted file. In this case, an error is thrown which also prints the file content to the application server log. This allows a user with both SignServer admin access and log read access to read files accessible by the local JBoss user.
- CVE-2026-25825Low
In Keyfactor SignServer before 7.6.0, the output file for SignerStatusReportWorker can be set to any path, even one pointing to an existing file. This allows a user with admin access to write files in arbitrary directories and potentially overwrite files accessible by the local JBoss user.
- CVE-2025-26787Medium
An error in the SignServer container startup logic in Keyfactor SignServer versions prior to 7.2 causes the Admin CLI command configuring certificate access to set the "allowany" property on every container restart instead of only on first startup. This resets the configuration to allow any user with a valid trusted client auth certificate to connect.
- CVE-2025-47221Medium
An arbitrary file write vulnerability was found in Keyfactor SignServer versions prior to 7.3.2. The ARCHIVETODISK_FILENAME-PATTERN, ARCHIVETODISK_PATH_BASE, and ARCHIVETODISK_PATH_PATTERN properties can be set to any path, including existing files, allowing an admin user to write files in arbitrary directories and potentially overwrite files accessible by the JBoss user.
- CVE-2025-47220Medium
A local file enumeration was found in Keyfactor SignServer versions prior to 7.3.2. The VISIBLE_SIGNATURE_CUSTOM_IMAGE_PATH property in PDFSigner and PAdESSigner can be set by an admin to any path without restrictions; if it points to an existing file readable by the application server user but not a recognized image format, an error is returned to the client confirming the file's existence.
Original NVD description (English source)
A class name enumeration was found in Keyfactor SignServer versions prior to 7.3.2. Setting any chosen class name to any of the properties requiring a class path and the provided class is not expected to return different errors if the class exists in deployment or not. This returns information about the classes loaded in the application or not to the clientside.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS