Critical severity · published Nov 19, 2025
CVE-2025-63210
The Newtec Celox UHD (models: CELOXA504, CELOXA820) running firmware version celox-21.6.13 is vulnerable to an authentication bypass
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Celoxa504 Firmware · Newtec
celox-21.6.13 · source: NVD
CF
Celoxa820 Firmware · Newtec
celox-21.6.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63210
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-63210
Exploit
https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63210_Newtec%20Celox%20UHD%20Authentication%20Bypass%20_%20Privilege%20Escalation
Product
https://www.newtec.com/