CVE-2026-59839: Fortinet Path traversal in CLI command allows deletion of root file system
This Fortinet advisory covers CVE-2026-59839 in FortiOS, FortiPAM and FortiProxy.
- CVE-2026-59839
Key facts
- Vendor rating
- Medium, CVSS 5.5
- CISA KEV
- Not listed (catalogue checked )
- Affected
- FortiOS FortiOS: 6.4 through 8.0 (vendor-listed versions); FortiPAM FortiPAM: 1.0 through 1.8 (vendor-listed versions); FortiProxy FortiProxy: 7.0 through 7.6 (vendor-listed versions)
- Fixed in
- FortiOS 7.6: 7.6.7, FortiOS 7.4: 7.4.10, FortiOS 7.2: migrate to a fixed release and 15 more below
- Advisory id
- FG-IR-26-151
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
CVSSv3 Score:
5.5
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
Text from the source record.
- FortiOS FortiOS: 6.4 through 8.0 (vendor-listed versions)
- FortiPAM FortiPAM: 1.0 through 1.8 (vendor-listed versions)
- FortiProxy FortiProxy: 7.0 through 7.6 (vendor-listed versions)
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-59839
Upgrade to a fixed release named by Fortinet:
- FortiOS 7.6: 7.6.7
- FortiOS 7.4: 7.4.10
- FortiOS 7.2: migrate to a fixed release
- FortiOS 7.0: migrate to a fixed release
- FortiOS 6.4: migrate to a fixed release
- FortiPAM 1.8: 1.8.1
- FortiPAM 1.7: 1.7.3
- FortiPAM 1.6: migrate to a fixed release
- FortiPAM 1.5: migrate to a fixed release
- FortiPAM 1.4: migrate to a fixed release
- FortiPAM 1.3: migrate to a fixed release
- FortiPAM 1.2: migrate to a fixed release
- FortiPAM 1.1: migrate to a fixed release
- FortiPAM 1.0: migrate to a fixed release
- FortiProxy 7.6: 7.6.6
- FortiProxy 7.4: 7.4.14
- FortiProxy 7.2: migrate to a fixed release
- FortiProxy 7.0: migrate to a fixed release
Vendor guidance
- Upgrade per the Affected/Solution table: FortiOS 7.6: 7.6.7; FortiOS 7.4: 7.4.10; FortiOS 7.2: migrate to a fixed release; FortiOS 7.0: migrate to a fixed release; FortiOS 6.4: migrate to a fixed release; ….
Support dates for the fixed release lines
- Fortinet FortiOS 7.6: support ends
- Fortinet FortiOS 7.4: support ends
- Fortinet FortiOS 7.2: support ended
- Fortinet FortiOS 7.0: support ended
- Fortinet FortiOS 6.4: support ended
More Fortinet advisories
CVE-2024-47569Oct 14, 2025insertion of sensitive information into sent data vulnerability in Fortinet FortiMailCVE-2025-22258Oct 14, 2025heap-based buffer overflow in Fortinet FortiSRA 1.5.0, 1.4.0 through 1.4.2, FortiPAMCVE-2024-26011Nov 12, 2024FortiManager authentication bypassCVE-2024-26010Jun 11, 2024stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.3, FortiOSCVE-2023-36640May 14, 2024use of externally-controlled format string vulnerability in Fortinet FortiOS 7.4.0CVE-2023-45583May 14, 2024use of externally-controlled format string vulnerability in Fortinet FortiOS 7.4.0
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