CVE-2025-6763
Published: 27 June 2025
Summary
CVE-2025-6763 is a high-severity Improper Authentication (CWE-287) vulnerability in Cometsystem T7611 Firmware. Its CVSS base score is 8.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 16.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability identified as CVE-2025-6763 affects Comet System devices including the T0510, T3510, T3511, T4511, T6640, T7511, T7611, P8510, P8552, and H3531 running firmware version 1.60. The issue resides in an unknown function of the /setupA.cfg file within the web-based management interface and stems from missing authentication, corresponding to CWE-287 and CWE-306. Successful manipulation allows bypass of access controls on this configuration endpoint.
An unauthenticated remote attacker can target the interface over the network, though the attack requires high complexity and is considered difficult to execute. If successful, the attacker can access or alter sensitive configuration data without credentials. A proof-of-concept exploit has been published publicly, and the CVSS 4.0 score of 8.2 reflects network attack vector combined with high attack complexity and impacts to confidentiality, integrity, and availability.
The vendor states that the listed devices are not intended for internet exposure and that end users bear responsibility for implementing proper device security. No official patches or configuration changes are referenced in the available advisories.
The EPSS score remains flat at 0.0193 with no material increase after disclosure, and some uncertainty persists regarding whether the vulnerability is fully confirmed in practice.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19324
Vulnerability details
A vulnerability was found in Comet System T0510, T3510, T3511, T4511, T6640, T7511, T7611, P8510, P8552 and H3531 1.60. Affected by this issue is some unknown functionality of the file /setupA.cfg of the component Web-based Management Interface. Performing manipulation results…
more
in missing authentication. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitation is known to be difficult. The exploit has been made public and could be used. There are still doubts about whether this vulnerability truly exists. The vendor explains, that "[d]evices described at CVE are not intended to be exposed into internet and proper security of devices is to end-users."
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing authentication in the web-based management interface enables exploitation of a public-facing application (T1190), unauthenticated access to view/dump device configurations (T1602.002), and modification to disable security features (T1562.001).
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Session content review can reveal authentication bypasses or failures in session establishment.
Assessments check authentication mechanisms for correct implementation and effectiveness, reducing successful authentication bypass attempts.
Documented IA policy and procedures require proper authentication mechanisms to be defined and followed, reducing improper authentication.
Requires adaptive authentication under specific conditions, directly strengthening authentication mechanisms against improper or insufficient authentication.
Identity providers centralize and enforce authentication mechanisms, reducing improper authentication.
Requires unique identification and authentication of organizational users, directly preventing improper authentication.
Enforces unique device identification and authentication before any connection is established, directly mitigating improper authentication weaknesses.
Directly requires implementation of compliant authentication mechanisms to cryptographic modules, preventing improper authentication.