CVE-2021-20021
SonicWall Email Security: Improper Privilege Management
- Act now
- CVSS 9.8 Critical
- CISA KEV, due
- VulnCheck KEV
- ENISA exploited-vulnerability catalog
What it is
ReportedSonicWall 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.
Dates
What is affected
ReportedSonicWall; SonicWall Email Security. Product-level identification only; no affected-version conclusion is available from this field.
Dates
Urgency and basis
Tracker computedAct now
Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".
Dates
Exploitation evidence
ReportedActive exploitation · CISA KEV · VulnCheck KEV · ENISA exploited-vulnerability catalog
Dates
What to do
ReportedApply updates per vendor instructions.
Source remediation ↗Dates
Detection and validation
Mapped metadata availability only. These signals do not change priority.
Sigma
Not mapped by tracked sources.
Atomic
Not mapped by tracked sources.
Nuclei
SonicWall Email Security <= 10.0.9.x - Unauthenticated Admin Account Creation. Check identifier: CVE-2021-20021.
Open Nuclei metadata
Evidence detail
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