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Servers and applications

CVE-2026-77709

A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication client, which in specific conditions could potentially enable a remote unauthenticated attacker to cause an application level denial of service.

Severity
Medium 5.9
Published
6 Nov 2026
Last changed
6 Nov 2026
Added to UpHeron
6 Nov 2026
Sources
CVE Program

Affected software

SoftwareAffected versions
SonicWall SonicOSServers and applications · cna:sonicwall|sonicos
  • Version 7.3.3-7015 and older versions
  • Version 8.2.2-8015 and older versions

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-77709