CVE-2021-26115

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-19 · updated 2026-06-17
Weakness: CWE-78

Description

An OS command injection (CWE-78) vulnerability in FortiWAN version 4.5.7 and below Command Line Interface may allow a local, authenticated and unprivileged attacker to escalate their privileges to root via executing a specially-crafted command.An OS command injection (CWE-78) vulnerability in FortiWAN Command Line Interface may allow a local, authenticated and unprivileged attacker to escalate their privileges to root via executing a specially-crafted command.

Affected products

Fortinet FortiWAN: before 4.5.8 — fixed in 4.5.8

How to fix

Upgrade to a fixed version: Fortinet FortiWAN 4.5.8. Check the vendor advisory for mitigations.

References

https://fortiguard.fortinet.com/psirt/FG-IR-21-069

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