What’s Vulnerable › Vulnerabilities
CVE-2021-42753
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-02-02 · updated 2026-06-17
- Weakness: CWE-22
Description
An improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability [CWE-22] in FortiWeb management interface 6.4.1 and below, 6.3.15 and below, 6.2.x, 6.1.x, 6.0.x, 5.9.x and 5.8.x may allow an authenticated attacker to perform an arbitrary file and directory deletion in the device filesystem.
Affected products
- Fortinet FortiWeb: from 5.8.0 before 6.3.16; from 6.4.0 before 6.4.2 — fixed in 6.3.16, 6.4.2
How to fix
Upgrade to a fixed version: Fortinet FortiWeb 6.3.16, 6.4.2. Check the vendor advisory for mitigations.
References
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