CVE-2026-59839

Root-filesystem deletion via CLI path traversal

Published Jul 14, 2026 · Updated Jul 14, 2026

Path traversal in Fortinet FortiOS, FortiPAM, and FortiProxy allows physically proximate attackers to delete root-filesystem data. A CLI file-deletion operation accepts traversal sequences without confining the resolved path to its intended directory. Exploitation requires high-privilege CLI access and can corrupt appliance files or interrupt service by removing root-filesystem content.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Fortinet FortiOS, FortiPAM, and FortiProxy allows physically proximate attackers to delete root-filesystem data. A CLI file-deletion operation accepts traversal sequences without confining the resolved path to its intended directory. Exploitation requires high-privilege CLI access and can corrupt appliance files or interrupt service by removing root-filesystem content.

The record

CVE
CVE-2026-59839
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-22, T1485
Attack vector
physical
Privileges
admin

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.0 <=6.4.16
  2. Affected versionversion=7.0.0 <=7.0.19
  3. Affected versionversion=7.2.0 <=7.2.13
  4. Affected versionversion=7.4.0 <=7.4.9
  5. Affected versionversion=7.6.0 <=7.6.6

What conditions does exploitation require?

Attack vectorphysical
Required privilegesadmin

What is affected?

Fortinet · FortiOSversion=6.4.0 <=6.4.16; version=7.0.0 <=7.0.19; version=7.2.0 <=7.2.13; version=7.4.0 <=7.4.9; version=7.6.0 <=7.6.6
Fortinet · FortiPAMversion=1.0.0 <=1.0.3; version=1.1.0 <=1.1.2; version=1.2.0; version=1.3.0 <=1.3.1; version=1.4.0 <=1.4.3; version=1.5.0 <=1.5.1; version=1.6.0 <=1.6.2; version=1.7.0 <=1.7.2; version=1.8.0
Fortinet · FortiProxyversion=7.0.0 <=7.0.23; version=7.2.0 <=7.2.16; version=7.4.0 <=7.4.13; version=7.6.0 <=7.6.5

Published CVSS scores

5.5Fortinet, Inc.CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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