How severe is CVE-2021-44458?

CVE-2021-44458 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44458 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44458?

CVE-2021-44458 affects Mirantis Lens. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44458?

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-2021-44458 published?

CVE-2021-44458 was published on 2022-01-10 and last updated on 2026-06-17.

CVE-2021-44458

CVE-2021-44458 is a high-severity vulnerability in Mirantis Lens with a CVSS 3.x base score of 8.3. 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-346.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 5.1
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-346
Affected product: Mirantis Lens
Published: 2022-01-10
Last modified: 2026-06-17

Description

Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would allow the attacker to execute arbitrary commands as the Lens user.

Frequently asked questions

What is CVE-2021-44458?: Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would allow the attacker to execute arbitrary commands as the Lens user.
How severe is CVE-2021-44458?: CVE-2021-44458 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44458 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44458?: CVE-2021-44458 affects Mirantis Lens. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44458?: 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-2021-44458 published?: CVE-2021-44458 was published on 2022-01-10 and last updated on 2026-06-17.

References

https://github.com/Mirantis/security/blob/main/advisories/0001.md

Affected products (1)

cpe:2.3:a:mirantis:lens:*:*:*:*:*:*:*:*

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