How severe is CVE-2021-46434?

CVE-2021-46434 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-46434 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46434?

CVE-2021-46434 affects Emqx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46434?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46434 published?

CVE-2021-46434 was published on 2022-03-28 and last updated on 2026-06-17.

CVE-2021-46434

CVE-2021-46434 is a medium-severity vulnerability in Emqx with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Emqx
Published: 2022-03-28
Last modified: 2026-06-17

Description

EMQ X Dashboard V3.0.0 is affected by username enumeration in the "/api /v3/auth" interface. When a user login, the application returns different results depending on whether the account is correct, that allowed an attacker to determine if a given username was valid

Frequently asked questions

What is CVE-2021-46434?: EMQ X Dashboard V3.0.0 is affected by username enumeration in the "/api /v3/auth" interface. When a user login, the application returns different results depending on whether the account is correct, that allowed an attacker to determine if a given username was valid
How severe is CVE-2021-46434?: CVE-2021-46434 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-46434 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46434?: CVE-2021-46434 affects Emqx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46434?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46434 published?: CVE-2021-46434 was published on 2022-03-28 and last updated on 2026-06-17.

References

https://github.com/emqx/emqx/issues/6791

Affected products (1)

cpe:2.3:a:emqx:emqx:3.0.0:*:*:*:*:*:*:*

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