Vulnerability in Axeltechnology Puma
CVE-2025-63221
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.axeltechnology.com/ (Product)
- github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63221_Axel… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63221?
- CVE-2025-63221 is a critical-severity vulnerability in Axeltechnology Puma, classified under Improper Access Control. CVSS score: 9.1/10. Published 2025-11-19.
- How severe is CVE-2025-63221?
- Critical severity. CVSS v3 base score is 9.1 out of 10.