CVE-2026-15511
Comfast CF-WR631AX V3 FastCGI Backend webmgnt system_wl_upload_pic_file os command injection
CVSS Score
9.8
EPSS Score
2.7%
EPSS Percentile
84th
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.
| CWE | CWE-78 CWE-77 |
| Vendor | comfast |
| Product | cf-wr631ax v3 |
| Published | Jul 12, 2026 |
| Last Updated | Jul 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Comfast / CF-WR631AX V3
2.7.0.0 2.7.0.1 2.7.0.2 2.7.0.3 2.7.0.4 2.7.0.5 2.7.0.6 2.7.0.7 2.7.0.8
References
vuldb.com: https://vuldb.com/vuln/377840 vuldb.com: https://vuldb.com/vuln/377840/cti vuldb.com: https://vuldb.com/cve/CVE-2026-15511 vuldb.com: https://vuldb.com/submit/846719 github.com: https://github.com/luminarydawn/cve/tree/main/Command%20Injection%20in%20Comfast%20CF-WR631AX%20V3%20%E2%80%94%20WiFi%20Portal%20Image%20Upload%20(CWE-78)
Credits
🔍 luminarydawn (VulDB User) VulDB CNA Team