PT-2021-2800 · Sonicwall · Sonicwall Email Security

Published 2021-04-09 · Updated 2025-11-21 · CVE-2021-20021

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions SonicWall Email Security version 10.0.9.x

Description The issue is related to improper privilege management in SonicWall Email Security, allowing a remote attacker to create an administrative account by sending a crafted HTTP request. This can impact the confidentiality, integrity, and availability of protected information.

Recommendations For SonicWall Email Security version 10.0.9.x, consider restricting access to administrative account creation functionality until a patch is available. As a temporary workaround, consider disabling remote HTTP request handling for administrative account creation until a fix is provided. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

BDU:2021-02345

BDU:2021-06256

CVE-2021-20021

Affected Products

Sonicwall Email Security

References · 14

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02345 · Security Note
• https://bdu.fstec.ru/vul/2021-06256 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20021 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20021 · Security Note
• https://fireeye.com/blog/threat-research/2021/04/zero-day-exploits-in-sonicwall-email-security-lead-to-compromise.html · Note
• https://cybersecurity-help.cz/vdb/SB2021041210 · Note
• https://twitter.com/gothburz/status/1991680589871649246 · Twitter Post
• https://t.me/ckure/7688 · Telegram Post
• https://t.me/nekaspersky/777 · Telegram Post
• https://securitylab.ru/news/519133.php · Note
• https://twitter.com/pdnuclei_bot/status/1971484928882938039 · Twitter Post
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note
• https://cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20021 · Note