How severe is CVE-2021-45089?

CVE-2021-45089 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-45089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45089?

CVE-2021-45089 affects Stormshield Endpoint Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45089?

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

When was CVE-2021-45089 published?

CVE-2021-45089 was published on 2021-12-21 and last updated on 2026-06-17.

CVE-2021-45089

CVE-2021-45089 is a medium-severity vulnerability in Stormshield Endpoint Security with a CVSS 3.x base score of 5.2. 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 5.2)
CVSS v2: 2.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Stormshield Endpoint Security
Published: 2021-12-21
Last modified: 2026-06-17

Description

Stormshield Endpoint Security 2.x before 2.1.2 has Incorrect Access Control.

Frequently asked questions

What is CVE-2021-45089?: Stormshield Endpoint Security 2.x before 2.1.2 has Incorrect Access Control.
How severe is CVE-2021-45089?: CVE-2021-45089 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-45089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45089?: CVE-2021-45089 affects Stormshield Endpoint Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45089?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-45089 published?: CVE-2021-45089 was published on 2021-12-21 and last updated on 2026-06-17.

References

https://advisories.stormshield.eu/2021-071/

Affected products (1)

cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*

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