CVE-2020-5135
CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns
Description
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
SeverityCritical
CVSS9.8
Exploit probability—
Product
SonicWall SonicOS
PublishedOct 12, 2020
First seenOct 12, 2020
Added to KEVMar 15, 2022
Weakness typeCWE-120CWE-120
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Apr 5, 2022Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sonicwall sonicos | v ≤ 6.0.5.3, 6.5.0.0 ≤ v ≤ 6.5.1.11, 6.5.4.0 ≤ v ≤ 6.5.4.7, 7.0.0.0 | — |
| sonicwall sonicosv | v ≤ 6.5.4.4 | — |
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