6.6
MEDIUM
CVSS 3.1
CVE-2026-59837
Fortinet FortiOS, FortiPAM, and FortiProxy Stack-Based Buffer Overflow Vulnerability
Overview
Description
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.
Details
INFO
Published Date :
July 14, 2026, 4:17 p.m.
Last Modified :
July 15, 2026, 2:50 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2026-59837
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 6abe59d8-c742-4dff-8ce8-9b0ca1073da8 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Update FortiOS, FortiPAM, and FortiProxy to versions that address the stack-based buffer overflow.
- Update FortiOS to a non-vulnerable version.
- Update FortiPAM to a non-vulnerable version.
- Update FortiProxy to a non-vulnerable version.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59837.
| URL | Resource |
|---|---|
| https://fortiguard.fortinet.com/psirt/FG-IR-26-148 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59837 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59837
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59837 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59837 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 15, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (excluding) 7.4.14 *cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (excluding) 7.4.2 *cpe:2.3:o:fortinet:fortipam:*:*:*:*:*:*:*:* versions from (including) 1.0.0 up to (excluding) 1.8.3 Added Reference Type Fortinet, Inc.: https://fortiguard.fortinet.com/psirt/FG-IR-26-148 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 15, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-59837', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-14T15:50:08.862887Z'} {'id': 'CVE-2026-59837', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-14T00:00:00+00:00'} -
New CVE Received by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:o:fortinet:fortipam:1.8.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.8.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.8.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.7.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.7.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.7.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.6.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.6.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.6.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.5.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.4.3:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.4.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.4.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.4.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.3.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.3.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.2.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.1.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.1.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.1.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.0.3:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.0.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.0.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortipam:1.0.0:*:*:*:*:*:*:*'], 'vendor': 'Fortinet', 'product': 'FortiPAM', 'versions': [{'status': 'affected', 'version': '1.8.0', 'versionType': 'semver', 'lessThanOrEqual': '1.8.2'}, {'status': 'affected', 'version': '1.7.0', 'versionType': 'semver', 'lessThanOrEqual': '1.7.2'}, {'status': 'affected', 'version': '1.6.0', 'versionType': 'semver', 'lessThanOrEqual': '1.6.2'}, {'status': 'affected', 'version': '1.5.0', 'versionType': 'semver', 'lessThanOrEqual': '1.5.1'}, {'status': 'affected', 'version': '1.4.0', 'versionType': 'semver', 'lessThanOrEqual': '1.4.3'}, {'status': 'affected', 'version': '1.3.0', 'versionType': 'semver', 'lessThanOrEqual': '1.3.1'}, {'status': 'affected', 'version': '1.2.0'}, {'status': 'affected', 'version': '1.1.0', 'versionType': 'semver', 'lessThanOrEqual': '1.1.2'}, {'status': 'affected', 'version': '1.0.0', 'versionType': 'semver', 'lessThanOrEqual': '1.0.3'}], 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:2.3:a:fortinet:fortisase:26.1.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisase:26.1.1:*:*:*:*:*:*:*'], 'vendor': 'Fortinet', 'product': 'FortiSASE', 'versions': [{'status': 'affected', 'version': '26.1.1', 'versionType': 'semver', 'lessThanOrEqual': '26.1.2'}], 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:2.3:a:fortinet:fortiproxy:7.4.13:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.12:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.11:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.10:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.9:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.8:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.7:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.6:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.16:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.15:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.14:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.13:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.12:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.11:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.10:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.9:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.8:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.7:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.6:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortiproxy:7.2.0:*:*:*:*:*:*:*'], 'vendor': 'Fortinet', 'product': 'FortiProxy', 'versions': [{'status': 'affected', 'version': '7.4.0', 'versionType': 'semver', 'lessThanOrEqual': '7.4.13'}, {'status': 'affected', 'version': '7.2.0', 'versionType': 'semver', 'lessThanOrEqual': '7.2.16'}], 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.13:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.12:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.10:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.9:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.8:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.7:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.19:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.18:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.17:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.16:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.15:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.14:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.13:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.11:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.16:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.15:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.14:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.13:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.11:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.9:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.7:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.5:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.4:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.3:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*', 'cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*'], 'vendor': 'Fortinet', 'product': 'FortiOS', 'versions': [{'status': 'affected', 'version': '7.4.0', 'versionType': 'semver', 'lessThanOrEqual': '7.4.1'}, {'status': 'affected', 'version': '7.2.0', 'versionType': 'semver', 'lessThanOrEqual': '7.2.13'}, {'status': 'affected', 'version': '7.0.0', 'versionType': 'semver', 'lessThanOrEqual': '7.0.19'}, {'status': 'affected', 'version': '6.4.0', 'versionType': 'semver', 'lessThanOrEqual': '6.4.16'}], 'defaultStatus': 'unaffected'}] Added Description A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests. Added CVSS V3.1 AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-121 Added Reference https://fortiguard.fortinet.com/psirt/FG-IR-26-148 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 14, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-59837', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-14T15:50:08.862887Z'}
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.