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8.9
CVE-2026-15511: Comfast CF-WR631AX V3 webmgnt system_wl_upload_pic_file command injection
CVE-2026-15511
CVE-2026-15511
Summary
A security issue exists in Comfast CF-WR631AX V3 routers with outdated firmware. An attacker could potentially inject malicious commands into the router's system, allowing them to take control of the device. Update the firmware to the latest version to fix this issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| comfast | cf-wr631ax v3 | 2.7.0.0 |
Original title
Comfast CF-WR631AX V3 FastCGI Backend webmgnt system_wl_upload_pic_file os command injection
Original description
A vulnerability was determined in Comfast CF-WR631AX V3 up to 2.7.0.8. Affected by this vulnerability is the function system_wl_upload_pic_file of the file /usr/bin/webmgnt of the component FastCGI Backend. This manipulation of the argument filename causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
nvd CVSS2.0
10.0
nvd CVSS3.1
9.8
nvd CVSS4.0
8.9
Vulnerability type
CWE-77
Command Injection
CWE-78
OS Command Injection
Published: 12 Jul 2026 · Updated: 16 Jul 2026 · First seen: 12 Jul 2026