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CVE-2020-5135

Severity
CRITICAL
CVSS
9.8
EPSS
0.24563
Risk score
72.8
CISA KEV
Yes
PoC
No
Published
2020-10-12
Modified
2025-10-21
First seen
2026-08-07
Aliases
EUVD-2020-26382, GHSA-VW5M-894X-7RP4
Products
SonicWall:SonicOS, SonicWall:SonicOS SonicOS 6.0.5.3-93o and earlier, SonicWall:SonicOS SonicOS 6.5.1.11-4n and earlier, SonicWall:SonicOS SonicOS 6.5.4.7-79n and earlier, SonicWall:SonicOS SonicOS 7.0.0.0-1, SonicWall:SonicOS SonicOSv 6.5.4.4-44v-21-794 and earlier
Sources
cisa.gov CVE-2020-5135
euvd EUVD-2020-26382

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.

References