How severe is CVE-2021-27523?

CVE-2021-27523 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-2021-27523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27523?

CVE-2021-27523 affects Open-falcon Dashboard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27523?

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-2021-27523 published?

CVE-2021-27523 was published on 2023-08-11 and last updated on 2026-06-17.

CVE-2021-27523

CVE-2021-27523 is a critical-severity vulnerability in Open-falcon Dashboard 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Open-falcon Dashboard
Published: 2023-08-11
Last modified: 2026-06-17

Description

An issue was discovered in open-falcon dashboard version 0.2.0, allows remote attackers to gain, modify, and delete sensitive information via crafted POST request to register interface.

Frequently asked questions

What is CVE-2021-27523?: An issue was discovered in open-falcon dashboard version 0.2.0, allows remote attackers to gain, modify, and delete sensitive information via crafted POST request to register interface.
How severe is CVE-2021-27523?: CVE-2021-27523 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-2021-27523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27523?: CVE-2021-27523 affects Open-falcon Dashboard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27523?: 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-2021-27523 published?: CVE-2021-27523 was published on 2023-08-11 and last updated on 2026-06-17.

References

https://github.com/open-falcon/dashboard/issues/153

Affected products (1)

cpe:2.3:a:open-falcon:dashboard:0.2.0:*:*:*:*:*:*:*