Live › vulnerability › CVE-2021-20021
Go to dashboardSonicWall Email Security has an improper privilege management flaw that lets an unauthenticated attacker create an administrator account by sending a crafted HTTP request. It is known to be used in a real exploit chain with CVE-2021-20022 and CVE-2021-20023 for privilege escalation.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| SonicWall SonicWall Email Security | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Apply the vendor's updates per SonicWall instructions; exact fixed version unknown from sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
SonicWall Email Security contains an improper privilege management vulnerability that allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20022 and CVE-2021-20023 to achieve privilege escalation.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-20021")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.