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CVE-2025-47221

19
FAUCET Score

CVE-2025-47221 is an arbitrary file write vulnerability affecting Keyfactor SignServer versions prior to 7.3.2. This flaw allows an authenticated administrator to write files to arbitrary directories on the server's file system, potentially overwriting existing files accessible by the JBoss user. Rated 5.3 MEDIUM, the vulnerability has a network attack vector and low attack complexity, but its impact is limited to integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.3.1CPE matchmatch criteria
cpe:2.3:a:keyfactor:signserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 6th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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