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High severity7.5NVD Advisory· Published Oct 12, 2020· Updated Jun 17, 2026

CVE-2020-5140

CVE-2020-5140

Description

A vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service by sending a malicious HTTP request that leads to memory addresses leak. This vulnerability affected SonicOS Gen 5 version 5.9.1.7, 5.9.1.13, Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version SonicOS 7.0.0.0.

Affected products

5
  • SonicWall/Sonicos4 versions
    cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*range: <=5.9.1.13
    • cpe:2.3:o:sonicwall:sonicos:7.0.0.0:*:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: SonicOS 6.5.4.7-79n and earlier
  • SonicWall/Sonicosv
    cpe:2.3:o:sonicwall:sonicosv:*:*:*:*:*:*:*:*
    Range: <=6.5.4.4

Patches

Vulnerability mechanics

References

1

News mentions

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