CVEvulnerability

CVE-2021-21890

9.1 CRITICAL Published 2021-12-22 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-12-22
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 3.0 ([email protected])
9.1 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:P
Weaknesses
CWE-121, CWE-787

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 (deletedir). An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected configurations

• lantronix premierwave 2050 firmware 8.9.0.0

Related

Weakness · CWE (2)

  • CWE-121 Stack-based Buffer Overflow weakness
  • CWE-787 Out-of-bounds Write weakness

References