How severe is CVE-2021-37394?

CVE-2021-37394 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37394 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37394?

CVE-2021-37394 affects Rpcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37394?

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-2021-37394 published?

CVE-2021-37394 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2021-37394

CVE-2021-37394 is a high-severity vulnerability in Rpcms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Rpcms
Published: 2021-07-26
Last modified: 2026-06-17

Description

In RPCMS v1.8 and below, attackers can interact with API and change variable "role" to "admin" to achieve admin user registration.

Frequently asked questions

What is CVE-2021-37394?: In RPCMS v1.8 and below, attackers can interact with API and change variable "role" to "admin" to achieve admin user registration.
How severe is CVE-2021-37394?: CVE-2021-37394 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37394 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37394?: CVE-2021-37394 affects Rpcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37394?: 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-2021-37394 published?: CVE-2021-37394 was published on 2021-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rpcms:rpcms:*:*:*:*:*:*:*:*

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