How severe is CVE-2021-30233?

CVE-2021-30233 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30233?

CVE-2021-30233 affects Chinamobile An Lianbao Wf-1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30233?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-30233 published?

CVE-2021-30233 was published on 2021-04-29 and last updated on 2026-06-17.

CVE-2021-30233

CVE-2021-30233 is a critical-severity vulnerability in Chinamobile An Lianbao Wf-1 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Chinamobile An Lianbao Wf-1 Firmware
Published: 2021-04-29
Last modified: 2026-06-17

Description

The api/ZRIptv/setIptvInfo interface in China Mobile An Lianbao WF-1 router 1.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the iptv_vlan parameter.

Frequently asked questions

What is CVE-2021-30233?: The api/ZRIptv/setIptvInfo interface in China Mobile An Lianbao WF-1 router 1.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the iptv_vlan parameter.
How severe is CVE-2021-30233?: CVE-2021-30233 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30233?: CVE-2021-30233 affects Chinamobile An Lianbao Wf-1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30233?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-30233 published?: CVE-2021-30233 was published on 2021-04-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:chinamobile:an_lianbao_wf-1_firmware:1.0.1:*:*:*:*:*:*:*

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