CVE-2021-30231

Name: CVE-2021-30231
Creator: NVD / NIST
Published: 2021-04-29T16:15:10.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.27%

Last modified Jun 17, 2026

CVE-2021-30231 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The api/zrDm/set_ZRElink interface in China Mobile An Lianbao WF-1 router 1.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the bssaddr, abiaddr, devtoken, devid, elinksync, or elink_proc_enable parameter.. EPSS estimates a 3.27% chance of exploitation in the next 30 days.

Description

The api/zrDm/set_ZRElink interface in China Mobile An Lianbao WF-1 router 1.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the bssaddr, abiaddr, devtoken, devid, elinksync, or elink_proc_enable parameter.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.27%

86.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Chinamobile	An Lianbao Wf-1 Firmware	1.0.1

References

http://iot.10086.cn/?l=en-usProduct
https://github.com/pokerfacett/MY_REQUEST/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection4.mdExploit, Third Party Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-03520Third Party Advisory
http://iot.10086.cn/?l=en-usProduct
https://github.com/pokerfacett/MY_REQUEST/blob/master/China%20Mobile%20An%20Lianbao%20WF-1%20router%20Command%20Injection4.mdExploit, Third Party Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-03520Third Party Advisory

Timeline

Published: Apr 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30231?

How severe is CVE-2021-30231?

CVE-2021-30231 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.27% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30231?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30231?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST