CVE-2021-44458Network attack vector

Remote command execution via unauthenticated terminal WebSocket

Published Jan 10, 2022 · Updated Aug 4, 2024

Improper authentication in Mirantis Lens 5.2.6 and earlier on Linux allows remote attackers to execute commands through its terminal. The shell WebSocket handler accepts browser connections without validating an IPC authentication token and previously failed to reject non-Lens origins. Exploitation requires Lens to be running, knowledge of a victim cluster ID, and a visit to a malicious site; commands run with the Lens user's privileges.

CVSS severity8.3
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Mirantis Lens 5.2.6 and earlier on Linux allows remote attackers to execute commands through its terminal. The shell WebSocket handler accepts browser connections without validating an IPC authentication token and previously failed to reject non-Lens origins. Exploitation requires Lens to be running, knowledge of a victim cluster ID, and a visit to a malicious site; commands run with the Lens user's privileges.

The record

CVE
CVE-2021-44458
Published
Jan 10, 2022
Updated
Aug 4, 2024
Vendor
Mirantis
Product
Lens
Classifications
CWE-346, CWE-287, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2 <=5.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mirantis · Lensversion=5.2 <=5.2.6

Published CVSS scores

9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.3MirantisCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
5.1NIST NVDAV:N/AC:H/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
CWE-287Improper Authentication
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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