RCE in Comfast Cf-Xr11
CVE-2025-57293
A command injection vulnerability in COMFAST CF-XR11 (firmware V2.7.2) exists in the multi_pppoe API, processed by the sub_423930 function in /usr/bin/webmgnt. The phy_interface parameter is not sanitized, allowing attackers to inject arbitrary commands via a POST request to /cgi-bin/mbox-config?method=SET§ion=multi_pppoe. When the action parameter is set to "one_click_redial", the unsanitized phy_interface is used in a system() call, enabling execution of malicious commands. This can lead to unauthorized access to sensitive files, execution of arbitrary code, or full device compromise.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.017 (74.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Comfast Cf-xr11
- Comfast Cf-xr11_firmware — versions 2.7.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-57293?
- CVE-2025-57293 is a high-severity vulnerability in Comfast Cf-Xr11, classified under Command Injection. CVSS score: 8.8/10. Published 2025-09-18.
- How severe is CVE-2025-57293?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-57293 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.