PoC Index

CVE-2021-20021

KEV RANSOMWARECRITICAL 9.8EPSS 83.4%

A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.

CVSS v3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
83.43% chance of exploitation in the next 30 days, 100th percentile
CISA KEV
added 2021-11-03, used in ransomware campaigns
Nuclei
critical · CWE-269
Published
2021-04-09
Updated
2026-08-12

Proof-of-concept exploits (1)

Nuclei templates (1)

References

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