CVE-2026-75364

Arbitrary Command Injection via Unvalidated display_name in Comfast Router Firmware

Published Aug 26, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
Comfast CF-N1-S firmware 2.6.0.1 and CF-WR630AX (2024-01-30 build), the update_interface_png SET handler in /usr/bin/webmgnt fails to sanitize the display_name parameter. User-controlled input is concatenated via sprintf() into the unquoted shell command `/etc/rrd/graphinterface %s %s` and executed by system() with root privileges. A remote authenticated attacker can inject arbitrary commands

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
Title Arbitrary Command Injection via Unvalidated display_name in Comfast Router Firmware
Type Values Removed Values Added
Title Remote Command Injection via Untrusted Input in Comfast CF‑N1‑S Firmware
Weaknesses CWE-20
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Remote Command Injection via Untrusted Input in Comfast CF‑N1‑S Firmware
Weaknesses CWE-20
CWE-78
Type Values Removed Values Added
Description Comfast CF-N1-S firmware 2.6.0.1 and CF-WR630AX (2024-01-30 build), the update_interface_png SET handler in /usr/bin/webmgnt fails to sanitize the display_name parameter. User-controlled input is concatenated via sprintf() into the unquoted shell command `/etc/rrd/graphinterface %s %s` and executed by system() with root privileges. A remote authenticated attacker can inject arbitrary commands
References

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Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 31, 2026, 5:44 PM
Reserved
Aug 17, 2026, 12:00 AM
Status
Deferred
Published
Aug 26, 2026, 9:16 PM
Modified
Aug 31, 2026, 8:59 PM