HOMEVULNERABILITIESCVE-2021-33963
CRITICAL

CVE-2021-33963

CWE-77Published: January 15, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2021-33963 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

chinamobile2 product(s)
an lianbao wf-1 firmwarean lianbao wf-1
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection9.md
ADVISORYhttps://www.cnvd.org.cn/flaw/show/CNVD-2021-03520
ADVISORYhttps://www.ebuy7.com/item/china-mobile-wireless-router-qualcomm-qiki-wifi6-routing-mesh-network-home-5g-dual-frequency-double-gigabit-port-wall-wall-high-speed-%E2%80%8B%E2%80%8Bhigh-power-enhanced-dormitory-students-an-lianbao-wf-1-628692180620
ADVISORYhttps://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection9.md
ADVISORYhttps://www.cnvd.org.cn/flaw/show/CNVD-2021-03520
ADVISORYhttps://www.ebuy7.com/item/china-mobile-wireless-router-qualcomm-qiki-wifi6-routing-mesh-network-home-5g-dual-frequency-double-gigabit-port-wall-wall-high-speed-%E2%80%8B%E2%80%8Bhigh-power-enhanced-dormitory-students-an-lianbao-wf-1-628692180620

All References (8)

→
http://iot.10086.cn/?l=en-usProduct
→
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection9.mdBroken Link · Third Party Advisory
→
https://www.cnvd.org.cn/flaw/show/CNVD-2021-03520Third Party Advisory
→
https://www.ebuy7.com/item/china-mobile-wireless-router-qualcomm-qiki-wifi6-routing-mesh-network-home-5g-dual-frequency-double-gigabit-port-wall-wall-high-speed-%E2%80%8B%E2%80%8Bhigh-power-enhanced-dormitory-students-an-lianbao-wf-1-628692180620Broken Link · Third Party Advisory
→
http://iot.10086.cn/?l=en-usProduct
→
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection9.mdBroken Link · Third Party Advisory
→
https://www.cnvd.org.cn/flaw/show/CNVD-2021-03520Third Party Advisory
→
https://www.ebuy7.com/item/china-mobile-wireless-router-qualcomm-qiki-wifi6-routing-mesh-network-home-5g-dual-frequency-double-gigabit-port-wall-wall-high-speed-%E2%80%8B%E2%80%8Bhigh-power-enhanced-dormitory-students-an-lianbao-wf-1-628692180620Broken Link · Third Party Advisory

Quick Facts

CVE IDCVE-2021-33963
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-77
CISA KEVNo
Affected1 vendor(s)
PublishedJan 15, 2022

Related CVEs (CWE-77)

CVE-2014-1905
10.0
CVE-2024-20418
10.0
CVE-2015-5082
10.0
CVE-2015-6912
10.0
CVE-2024-28354
10.0
CVE-2015-1938
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-33963 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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