CVE-2026-59839 vulnerability in Fortinet Products
Published on July 14, 2026
A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.8.0, FortiPAM 1.7.0 through 1.7.2, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4 through 7.4.13, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
Vulnerability Analysis
CVE-2026-59839 can be exploited with physical access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-59839 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-59839
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Affected Versions
Fortinet FortiProxy:- Version 7.6.0, <= 7.6.5 is affected.
- Version 7.4.0, <= 7.4.13 is affected.
- Version 7.2.0, <= 7.2.16 is affected.
- Version 7.0.0, <= 7.0.23 is affected.
- Version 7.6.0, <= 7.6.6 is affected.
- Version 7.4.0, <= 7.4.9 is affected.
- Version 7.2.0, <= 7.2.13 is affected.
- Version 7.0.0, <= 7.0.19 is affected.
- Version 6.4.0, <= 6.4.16 is affected.
- Version 1.8.0 is affected.
- Version 1.7.0, <= 1.7.2 is affected.
- Version 1.6.0, <= 1.6.2 is affected.
- Version 1.5.0, <= 1.5.1 is affected.
- Version 1.4.0, <= 1.4.3 is affected.
- Version 1.3.0, <= 1.3.1 is affected.
- Version 1.2.0 is affected.
- Version 1.1.0, <= 1.1.2 is affected.
- Version 1.0.0, <= 1.0.3 is affected.