VULNERABILITY INTELLIGENCE

CVE-2021-21877

CVSS score9.1 CRITICAL
EPSS probability2.78%
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

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

Weakness classification

  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Primary references