CVE-2021-21877

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

Specially-crafted HTTP requests can lead to arbitrary command execution in “GET” requests. An attacker can make authenticated HTTP requests to trigger this vulnerability.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-78

Affected software

VendorProductVersions
n/aLantronixLantronix PremierWave 2050 8.9.0.0R4 (in QEMU)

References

Timeline

Published
Dec 22, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-218784.9A local file inclusion vulnerability exists in the Web Manager Applications and FsBrowse functionality of Lantronix PremierWave 2050 8.9.0.0CVE-2021-218798.8A directory traversal vulnerability exists in the Web Manager File Upload functionality of Lantronix PremierWave 2050 8.9.0.0R4. A speciallyCVE-2021-21888.2Vulnerability in the Oracle iStore product of Oracle E-Business Suite (component: Shopping Cart). Supported versions that are affected are 1CVE-2021-218807.2A directory traversal vulnerability exists in the Web Manager FsCopyFile functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-CVE-2021-218819.9An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0CVE-2021-218828.8An OS command injection vulnerability exists in the Web Manager FsUnmount functionality of Lantronix PremierWave 2050 8.9.0.0R4. A speciallyCVE-2021-218839.9An OS command injection vulnerability exists in the Web Manager Diagnostics: Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4. A sCVE-2021-218849.1An OS command injection vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specCVE-2021-218857.2A directory traversal vulnerability exists in the Web Manager FsMove functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially crafCVE-2021-218864.3A directory traversal vulnerability exists in the Web Manager FSBrowsePage functionality of Lantronix PremierWave 2050 8.9.0.0R4. A speciallCVE-2021-218879.1A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4 (CVE-2021-218889.1An OS command injection vulnerability exists in the Web Manager SslGenerateCertificate functionality of Lantronix PremierWave 2050 8.9.0.0R4
CVE-2021-21877: Critical severity, CVSS 9.1 | Vulnix