Auth bypass in Newtec Celoxa504
CVE-2025-63210
The Newtec Celox UHD (models: CELOXA504, CELOXA820) running firmware version celox-21.6.13 is vulnerable to an authentication bypass. An attacker can exploit this issue by modifying intercepted responses from the /celoxservice endpoint. By injecting a forged response body during the loginWithUserName flow, the attacker can gain Superuser or Operator access without providing valid credentials.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% 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
- Newtec Celoxa504
- Newtec Celoxa504 Firmware — versions celox-21.6.13
- Newtec Celoxa820
- Newtec Celoxa820 Firmware — versions celox-21.6.13
Weakness classification (CWE)
References
- www.newtec.com/ (Product)
- github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63210_Newte… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63210?
- CVE-2025-63210 is a critical-severity vulnerability in Newtec Celoxa504, classified under Improper Authentication. CVSS score: 9.8/10. Published 2025-11-19.
- How severe is CVE-2025-63210?
- Critical severity. CVSS v3 base score is 9.8 out of 10.