5.9
Medium
CVE-2026-77708 A pre-authentication stack-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication…
Description
A pre-authentication stack-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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
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…
5.1
Medium
CVE-2026-77709
A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+…
5.9
Medium
CVE-2026-19868
SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
7.5
High
CVE-2026-82308
A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS SSL-VPN service,…
7.5
High