Critical 9.8Published Jul 12, 2026

CVE-2026-15511Comfast CF-WR631AX V3 FastCGI Backend webmgnt system_wl_upload_pic_file os command injection

Updated under an hour ago (Oct 27, 2026, 3:23 AM ET)

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It affects Comfast CF-WR631AX V3. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Comfast CF-WR631AX V3

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-78, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Comfast CF-WR631AX V3 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; and 1 more ranges	CNA record

References

References

https://vuldb.com/vuln/377840	vdb-entry, technical-description
https://vuldb.com/vuln/377840/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-15511	third-party-advisory
https://vuldb.com/submit/846719	third-party-advisory
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)	exploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.