CVE-2021-33963

China Mobile An Lianbao WF-1 v1.0.1 router web interface through /api/ZRMacClone/mac_addr_clone...

9.8 Critical

China Mobile An Lianbao WF-1 v1.0.1 router web interface through /api/ZRMacClone/mac_addr_clone receives parameters by POST request, and the parameter macType has a command injection vulnerability. An attacker can use the vulnerability to execute remote commands.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.07%Up 2.0 points since Jan 16, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2021-33963
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-77
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-33963
Updated: 2026-11-02

EUVDEUVD-2021-20634 No score

Record: EUVD-2021-20634
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4hg4-c65x-4827 9.8

China Mobile An Lianbao WF-1 v1.0.1 router web interface through /api/ZRMacClone/mac_addr_clone...

Record: GHSA-4hg4-c65x-4827
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-77
Updated: 2026-11-02

Affected products

chinamobile an lianbao wf-1 firmware

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-33963 is a critical vulnerability (CVSS 9.8) in Chinamobile An Lianbao Wf-1 Firmware, published January 15, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.07%, the 87th percentile. No source names a fixed version.