How severe is CVE-2021-37933?

CVE-2021-37933 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-37933 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37933?

CVE-2021-37933 affects Huntflow Huntflow Enterprise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37933?

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

When was CVE-2021-37933 published?

CVE-2021-37933 was published on 2021-10-14 and last updated on 2026-06-17.

CVE-2021-37933

CVE-2021-37933 is a high-severity vulnerability in Huntflow Huntflow Enterprise with a CVSS 3.x base score of 7.5. 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-74.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Huntflow Huntflow Enterprise
Published: 2021-10-14
Last modified: 2026-06-17

Description

An LDAP injection vulnerability in /account/login in Huntflow Enterprise before 3.10.6 could allow an unauthenticated, remote user to modify the logic of an LDAP query and bypass authentication. The vulnerability is due to insufficient server-side validation of the email parameter before using it to construct LDAP queries. An attacker could bypass authentication exploiting this vulnerability by sending login attempts in which there is a valid password but a wildcard character in email parameter.

Frequently asked questions

What is CVE-2021-37933?: An LDAP injection vulnerability in /account/login in Huntflow Enterprise before 3.10.6 could allow an unauthenticated, remote user to modify the logic of an LDAP query and bypass authentication. The vulnerability is due to insufficient server-side validation of the email parameter before using it to construct LDAP queries. An attacker could bypass authentication exploiting this vulnerability by sending login attempts in which there is a valid password but a wildcard character in email parameter.
How severe is CVE-2021-37933?: CVE-2021-37933 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-37933 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37933?: CVE-2021-37933 affects Huntflow Huntflow Enterprise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37933?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-37933 published?: CVE-2021-37933 was published on 2021-10-14 and last updated on 2026-06-17.

References

https://gist.github.com/andrey-lomtev/cbf12bc8d8763996cf8d6d1641a0b049

Affected products (1)

cpe:2.3:a:huntflow:huntflow_enterprise:*:*:*:*:*:*:*:*

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