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Vulnerabilities

Vulnerability · CVE-2021-21881

Lantronix premierwave_2050_firmware Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Published Aug 19, 2022 · catalog updated Aug 19, 2022 · Lantronix

Patch now

CVE-2021-21881 is in the CISA known-exploited catalog. Confirm Lantronix against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
36.94%
Remediation
Remediation guidance
Affected products
vendor Lantronix premierwave_2050_firmware

An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Lantronix premierwave_2050_firmwareversion unspecified

How to fix CVE-2021-21881

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-21881 is in the CISA known-exploited catalog. Confirm Lantronix against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 36.94%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 19, 2022 · VulnCheck KEV

    Detected

    An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

  2. Aug 19, 2022 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2021-21881

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-21881

    30-day exploitation probability 36.9%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2021-21881

    An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulne

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.