9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CISA is aware of three vulnerabilities affecting SonicWall Email Security products: [CVE-2021-20021](<https://vulners.com/cve/CVE-2021-20021 >), [CVE-2021-20022](<https://vulners.com/cve/CVE-2021-20022 >), and CVE-2021-20023. A remote attacker could exploit these vulnerabilities to take control of an affected system. According to SonicWall, βIn at least one known case, these vulnerabilities have been observed to be exploited βin the wild.ββ
CISA encourages users and administrators to review the SonicWall [security advisory](<https://www.sonicwall.com/support/product-notification/security-notice-sonicwall-email-security-zero-day-vulnerabilities/210416112932360/ >) and apply the necessary update as soon as possible. Note: SonicWall released patches for CVE-2021-20021 and CVE-2021-20022 on April 9, 2021, and for CVE-2021-20023 on April 20, 2021.
This product is provided subject to this Notification and this Privacy & Use policy.
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We recently updated our anonymous product survey; weβd welcome your feedback.
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P