A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Fortinet FortiOS unaffected
Version Status Constraints
7.6.1 affected ≤ 7.6.6
Fortinet FortiPAM unaffected
Version Status Constraints
1.8.0 affected ≤ 1.8.4
1.7.0 affected ≤ 1.7.2
1.6.0 affected ≤ 1.6.2
1.5.0 affected ≤ 1.5.1
1.4.0 affected ≤ 1.4.3
1.3.0 affected ≤ 1.3.1
1.2.0 affected —
1.1.0 affected ≤ 1.1.2
1.0.0 affected ≤ 1.0.3
Fortinet FortiProxy unaffected
Version Status Constraints
7.6.0 affected ≤ 7.6.4
7.4.0 affected ≤ 7.4.11
7.2.0 affected ≤ 7.2.16
7.0.0 affected ≤ 7.0.23

No data.

No data.

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Vendors Products
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Fortios Subscribe
Fortipam Subscribe
Fortiproxy Subscribe

Project Subscriptions

Vendors Products
Fortinet Subscribe
Fortios Subscribe
Fortipam Subscribe
Fortiproxy Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.7 or above

Workaround

No workaround given by the vendor.

References
Link Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-161 cve-icon cve-icon
History

Wed, 12 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 12 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.
First Time appeared Fortinet
Fortinet fortios
Fortinet fortipam
Fortinet fortiproxy
Weaknesses CWE-121
CPEs cpe:2.3:a:fortinet:fortiproxy:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.12:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.13:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.14:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.15:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.16:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.17:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.18:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.19:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.20:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.21:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.22:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.23:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.12:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.13:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.14:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.15:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.16:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.2.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.3.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.3.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.5.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.7.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.7.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.7.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.8.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.8.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.8.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.8.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.8.4:*:*:*:*:*:*:*
Vendors & Products Fortinet
Fortinet fortios
Fortinet fortipam
Fortinet fortiproxy
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: fortinet

Published:

Updated: 2026-08-12T14:17:27.100Z

Reserved: 2026-08-06T12:21:12.061Z

Link: CVE-2026-71407

cve-icon Vulnrichment

Updated: 2026-08-12T14:17:24.321Z

cve-icon NVD

Status : Received

Published: 2026-08-12T13:17:25.497

Modified: 2026-08-12T15:18:30.190

Link: CVE-2026-71407

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T18:15:02Z

Weaknesses