VULNERABILITY INTELLIGENCE
CVE-2021-21876
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 PUT requests. An attacker can make authenticated HTTP requests to trigger this vulnerability.
Weakness classification
- talos-cna@cisco.com: CWE-78
- nvd@nist.gov: CWE-78
Primary references
- talos-cna@cisco.com — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory