CVE-2025-63221

Name: CVE-2025-63221
Creator: NVD / NIST
Published: 2025-11-19T16:15:48.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2025-63221 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The Axel Technology puma devices (firmware versions 0.8.5 to 1.0.3) are vulnerable to Broken Access Control due to missing authentication on the /cgi-bin/gstFcgi.fcgi endpoint. Unauthenticated remote attackers can list user accounts, create new administrative users, delete users, and modify system settings, leading to full compromise of the device.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

The Axel Technology puma devices (firmware versions 0.8.5 to 1.0.3) are vulnerable to Broken Access Control due to missing authentication on the /cgi-bin/gstFcgi.fcgi endpoint. Unauthenticated remote attackers can list user accounts, create new administrative users, delete users, and modify system settings, leading to full compromise of the device.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.48%

37.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Axeltechnology	Puma Firmware	>= 0.8.5, <= 1.0.3

References

https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63221_Axel%20Technology%20puma%20-%20Broken%20Access%20ControlExploit, Third Party Advisory
https://www.axeltechnology.com/Product

Timeline

Published: Nov 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-63221?

How severe is CVE-2025-63221?

CVE-2025-63221 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2025-63221?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-63221?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST