A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 m…
- Severity
- High8.1CVSS 3.1, High
- EPSS
- 0.42%
- Published
- 12 Aug 2026
- Updated
- 8 Sept 2026
Description
Title, description and vendor guidance are quoted from the source records.
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.
Weakness: CWE-121
Known exploited
Not listed in CISA KEV as of the last check.
Exploit prediction
0.42% probability of exploitation in the next 30 days (percentile 34%).
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Fortinet FortiOSSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.6 | 7.6.1 – 7.6.6 | Fixed after 7.6.6 |
Versions not listed are stated unaffected by the vendor.
Fortinet FortiProxySource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.6 | 7.6.0 – 7.6.4 | Fixed after 7.6.4 |
| 7.4 | 7.4.0 – 7.4.11 | Fixed after 7.4.11 |
| 7.2 | 7.2.0 – 7.2.16 | Fixed after 7.2.16 |
| 7.0 | 7.0.0 – 7.0.23 | Fixed after 7.0.23 |
Versions not listed are stated unaffected by the vendor.
Affected products
- Fortinet FortiPAM · 1.8.0 ≤ 1.8.4, 1.7.0 ≤ 1.7.2, 1.6.0 ≤ 1.6.2, 1.5.0 ≤ 1.5.1, 1.4.0 ≤ 1.4.3, 1.3.0 ≤ 1.3.1, 1.2.0, 1.1.0 ≤ 1.1.2, 1.0.0 ≤ 1.0.3
Workaround / Vendor remediation
Vendor remediation · FortiOS
Upgrade to FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.7 or above
Vendor remediation · FortiProxy
Upgrade to FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.7 or above
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Fortinet (CVE record)
- Fortinet (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC