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CVE-2021-20027 A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a…
Description
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| SonicOS | Versions not published |
Other CVEs of SonicOS
The 75 CVEs of SonicOS →
CVE-2026-19703
A weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions…
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A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+…
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CVE-2026-77708
A pre-authentication stack-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication…
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CVE-2026-19868
SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
7.5
High