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CVE-2021-33963

32
FAUCET Score

CVE-2021-33963 describes a critical command injection vulnerability in the China Mobile An Lianbao WF-1 v1.0.1 router's web interface, specifically within the /api/ZRMacClone/mac_addr_clone endpoint. This flaw allows an unauthenticated attacker to execute arbitrary remote commands by manipulating the 'macType' parameter in a POST request. With a CVSS score of 9.8 (Critical), the vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:o:chinamobile:an_lianbao_wf-1_firmware:1.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.07%
Probability of exploitation in next 30 days
EPSS Percentile
86.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0307 is in the 78th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

iot.10086.cn
Product
github.com / pokerfacett/MY_CVE_CREDIT/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection9.md
Broken LinkThird Party Advisory
cnvd.org.cn / flaw/show/CNVD-2021-03520
Third Party Advisory
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
Broken LinkThird Party Advisory