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Fencer Intel
critical 9.9

CVE-2021-21881 in the critical feed json

An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.…

published 4y ago modified 4mo ago also EUVD-2021-9052

cvss
9.9
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
36.9%
EPSS 36.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

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.

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Exploit prediction

36.94% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Lantronix PremierWave 2050 8.9.0.0R4 - Remote Command Injection nuclei detection template
  • talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2021-1325 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.9 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

  • n/a Lantronix

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.