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Vulnerability record · CVE-2025-57740 · published 14 October 2025

CVE-2025-57740: Fortinet fortiproxy heap-based buffer overflow vulnerability

Fortinet · Fortiproxy

An Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.0 all versions, 6.4 all versions; FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions and FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions RDP bookmark connection may allow an authenticated user to execute unauthorized code via crafted requests.

8.8 CVSS 3.1 High EPSS 0.68% · top 49.7% CWE-122 · Heap-based buffer overflow
8.8CVSS 3.1 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.0 all versions, 6.4 all versions; FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions and FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions RDP bookmark connection may allow an authenticated user to execute unauthorized code via crafted requests.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://fortiguard.fortinet.com/psirt/FG-IR-25-756 Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-864900.html

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-57740), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.