# CVE-2026-124585: Chengdu Feiyuxing Technology VW2100/VEC10GP Web Administration webserver add_expmac os command injection

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

A vulnerability was found in Chengdu Feiyuxing Technology VW2100 and VEC10GP 1.0 B-MB3W202-210825-r11775. This issue affects the function add_expmac of the file var/html/webserver of the component Web Administration Interface. The manipulation of the argument mac results in os command injection. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Chengdu Feiyuxing Technology / VW2100: 1.0 B-MB3W202-210825-r11775 (affected). Source: CNA: VulDB
- Chengdu Feiyuxing Technology / VEC10GP: 1.0 B-MB3W202-210825-r11775 (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 9.4 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P; source: CNA: VulDB

- CVSS 3.1: 9.9 (critical); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R; source: CNA: VulDB

- CVSS 3.0: 9.9 (critical); CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R; source: CNA: VulDB

- CVSS 2.0: 9 (critical); AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-78, CWE-77

## Exploit evidence

- exploit: https://github.com/C0KE/Feiyuxing-VROS-add_expmac-RCE/blob/main/poc_add_expmac.py (CNA: VulDB)

## References

- https://vuldb.com/vuln/433009 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/433009/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-124585 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1039019 (CNA: VulDB; third-party-advisory)

- https://github.com/C0KE/Feiyuxing-VROS-add_expmac-RCE/blob/main/poc_add_expmac.py (CNA: VulDB; exploit)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-124585; retrieved 2026-11-09; source updated 2026-11-09

Revision: ded8bd93f9b662b991c1902ba00fa6734f1aa51841b66acabc0f280c9a492ce3

Canonical: https://y2.dev/cve/CVE-2026-124585

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