How severe is CVE-2021-36721?

CVE-2021-36721 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-36721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36721?

CVE-2021-36721 affects Sysaid Application Programming Interface. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36721?

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

When was CVE-2021-36721 published?

CVE-2021-36721 was published on 2021-12-14 and last updated on 2026-06-17.

CVE-2021-36721

CVE-2021-36721 is a medium-severity vulnerability in Sysaid Application Programming Interface with a CVSS 3.x base score of 4.4. 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 4.4)
CVSS v2: 5.0
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sysaid Application Programming Interface
Published: 2021-12-14
Last modified: 2026-06-17

Description

Sysaid API User Enumeration - Attacker sending requests to specific api path without any authorization before 21.3.60 version could get users names from the LDAP server.

Frequently asked questions

What is CVE-2021-36721?: Sysaid API User Enumeration - Attacker sending requests to specific api path without any authorization before 21.3.60 version could get users names from the LDAP server.
How severe is CVE-2021-36721?: CVE-2021-36721 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-36721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36721?: CVE-2021-36721 affects Sysaid Application Programming Interface. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36721?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36721 published?: CVE-2021-36721 was published on 2021-12-14 and last updated on 2026-06-17.

References

https://www.gov.il/en/departments/faq/cve_advisories

Affected products (1)

cpe:2.3:a:sysaid:application_programming_interface:*:*:*:*:*:*:*:*