# Keyfactor SignServer vulnerabilities

Source: https://junglewise.ai/threats/technologies/signserver  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/signserver.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in Keyfactor SignServer: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-25827, was published on 15 September 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 3
- All time: 7 (0 critical, 0 exploited in the wild)

## About Keyfactor SignServer

Keyfactor digital signature and code signing server platform.

## Latest Keyfactor SignServer vulnerabilities

- [CVE-2026-25827: Keyfactor SignServer local file enumeration via unrestricted properties](https://junglewise.ai/threats/cve-2026-25827-keyfactor-signserver-local-file-enumeration-via-unrestricted) (low, CVSS 2.3, published 15 Sep 2026)
- [CVE-2026-25826: Keyfactor SignServer file content exposure in PKCS11CryptoToken](https://junglewise.ai/threats/cve-2026-25826-keyfactor-signserver-file-content-exposure-in-pkcs11cryptotoken) (medium, CVSS 4.9, published 15 Sep 2026)
- [CVE-2026-25825: Keyfactor SignServer arbitrary file write in SignerStatusReportWorker](https://junglewise.ai/threats/cve-2026-25825-keyfactor-signserver-arbitrary-file-write-in) (low, CVSS 2.7, published 15 Sep 2026)
- [CVE-2025-26787: An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin…](https://junglewise.ai/threats/cve-2025-26787-an-error-in-the-signserver-container-startup-logic-was-found-in) (medium, CVSS 4.7, published 22 Dec 2025)
- [CVE-2025-47222: A class name enumeration was found in Keyfactor SignServer versions prior to 7.3.2. Setting any chosen class name to…](https://junglewise.ai/threats/cve-2025-47222-a-class-name-enumeration-was-found-in-keyfactor-signserver) (medium, CVSS 6.5, published 13 Nov 2025)
- [CVE-2025-47221: An arbitrary file write was found in Keyfactor SignServer versions prior to 7.3.2. The properties…](https://junglewise.ai/threats/cve-2025-47221-an-arbitrary-file-write-was-found-in-keyfactor-signserver) (medium, CVSS 5.3, published 13 Nov 2025)
- [CVE-2025-47220: A local file enumeration was found in Keyfactor SignServer versions prior to 7.3.2 .The property…](https://junglewise.ai/threats/cve-2025-47220-a-local-file-enumeration-was-found-in-keyfactor-signserver) (medium, CVSS 5.3, published 13 Nov 2025)

## Most severe Keyfactor SignServer vulnerabilities

- [CVE-2025-47222: A class name enumeration was found in Keyfactor SignServer versions prior to 7.3.2. Setting any chosen class name to…](https://junglewise.ai/threats/cve-2025-47222-a-class-name-enumeration-was-found-in-keyfactor-signserver) (medium, CVSS 6.5, published 13 Nov 2025)
- [CVE-2025-47220: A local file enumeration was found in Keyfactor SignServer versions prior to 7.3.2 .The property…](https://junglewise.ai/threats/cve-2025-47220-a-local-file-enumeration-was-found-in-keyfactor-signserver) (medium, CVSS 5.3, published 13 Nov 2025)
- [CVE-2025-47221: An arbitrary file write was found in Keyfactor SignServer versions prior to 7.3.2. The properties…](https://junglewise.ai/threats/cve-2025-47221-an-arbitrary-file-write-was-found-in-keyfactor-signserver) (medium, CVSS 5.3, published 13 Nov 2025)
- [CVE-2026-25826: Keyfactor SignServer file content exposure in PKCS11CryptoToken](https://junglewise.ai/threats/cve-2026-25826-keyfactor-signserver-file-content-exposure-in-pkcs11cryptotoken) (medium, CVSS 4.9, published 15 Sep 2026)
- [CVE-2025-26787: An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin…](https://junglewise.ai/threats/cve-2025-26787-an-error-in-the-signserver-container-startup-logic-was-found-in) (medium, CVSS 4.7, published 22 Dec 2025)
- [CVE-2026-25825: Keyfactor SignServer arbitrary file write in SignerStatusReportWorker](https://junglewise.ai/threats/cve-2026-25825-keyfactor-signserver-arbitrary-file-write-in) (low, CVSS 2.7, published 15 Sep 2026)
- [CVE-2026-25827: Keyfactor SignServer local file enumeration via unrestricted properties](https://junglewise.ai/threats/cve-2026-25827-keyfactor-signserver-local-file-enumeration-via-unrestricted) (low, CVSS 2.3, published 15 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 3 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Keyfactor SignServer vulnerabilities", https://junglewise.ai/threats/technologies/signserver, 9 November 2026.