FORTINETVERIFIED
Stack buffer overflow in WAD
Checked 7 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.
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PUBLISHER UPDATE · FORTINET-PRODUCTS-A2121F72B68EB4C3
FORTINET-PRODUCTS-A2121F72B68EB4C3 release notes and known issues
Stack buffer overflow in WAD
Scope: Fortinet products. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.
Summary
CVSSv3 Score: 5.1 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS explicit proxy may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled. Revised on 2026-08-12 00:00:00
Improvements and security content
- CVSSv3 Score: 5.1 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS explicit proxy may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled. Revised on 2026-08-12 00:00:00
Known issues
Publisher statementNot stated. The verified publisher record does not contain a known-issues statement.
Affected products and versions
Products
- Fortinet products
Affected versions
- 5.1
Fixed versions or updates
- No fixed version is stated in this record.
Recommended action
Review the official publisher document before deployment.