VULNERABILITY INTELLIGENCE

CVE-2021-21891

CVSS score9.1 CRITICAL
EPSS probability3.09%
CISA KEVNot currently listed
Published2021-12-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Description

A stack-based buffer overflow vulnerability exists in the Web Manager FsBrowseClean functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution in the vulnerable portion of the branch (deletefile). An attacker can make an authenticated HTTP request to trigger this vulnerability.

Weakness classification

  • talos-cna@cisco.com: CWE-121
  • nvd@nist.gov: CWE-787

Primary references