Path traversal in CLI command allows deletion of root file system

unknownCVE-2026-59839

CVSSv3 Score: 5.0 An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability [CWE-22] in FortiOS, FortiPAM, FortiProxy and FortiSwitch Manager may allow a privileged authenticated attacker with physical access to the device to delete the file system via crafted CLI commands. Revised on 2026-07-14 00:00:00

CSIRTS triage

vendor: Fortinet product: FortiOS, FortiPAM, FortiProxy, FortiSwitch Manager Path traversal

What: A privileged authenticated attacker may delete the file system via crafted CLI commands.
Who is affected: Privileged authenticated users of FortiOS, FortiPAM, FortiProxy, and FortiSwitch Manager.
Urgency: Remediation is critical to prevent potential system destruction.
Action: Restrict CLI command access to authorized personnel only.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Fortinet FortiGuard PSIRT (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://fortiguard.fortinet.com/psirt/FG-IR-26-151

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-598390.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59839	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Fortinet FortiOS and FortiProxy: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Fortinet products (July 15, 2026)cert-fr-avis
mediumCVE-2026-59839: A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability…nvd

Recent advisories for Path traversal in

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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