How severe is CVE-2025-47221?

CVE-2025-47221 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-47221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-47221?

CVE-2025-47221 affects Keyfactor Signserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-47221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-47221 have an EU (EUVD) identifier?

Yes. CVE-2025-47221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175378.

When was CVE-2025-47221 published?

CVE-2025-47221 was published on 2025-11-13 and last updated on 2026-06-17.

CVE-2025-47221

CVE-2025-47221 is a medium-severity vulnerability in Keyfactor Signserver with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-175378
Weakness: CWE-284
Affected product: Keyfactor Signserver
Published: 2025-11-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-47221?: 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.
How severe is CVE-2025-47221?: CVE-2025-47221 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-47221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-47221?: CVE-2025-47221 affects Keyfactor Signserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-47221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-47221 have an EU (EUVD) identifier?: Yes. CVE-2025-47221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175378.
When was CVE-2025-47221 published?: CVE-2025-47221 was published on 2025-11-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:keyfactor:signserver:*:*:*:*:*:*:*:*

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CVE-2025-47222 — Medium (CVSS 6.5): A class name enumeration was found in Keyfactor SignServer versions prior to 7.3.2. Setting any chosen class name to…
CVE-2025-47220 — Medium (CVSS 5.3): A local file enumeration was found in Keyfactor SignServer versions prior to 7.3.2 .The property…
CVE-2025-26787 — Medium (CVSS 4.7): An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin…

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