CVE-2025-57740: Fortinet Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version
This Fortinet advisory covers CVE-2025-57740 in FortiOS, FortiPAM and FortiProxy.
- CVE-2025-57740
Key facts
- Vendor rating
- High, CVSS 7.5
- CISA KEV
- Not listed (catalogue checked )
- Affected
- FortiOS: 6.4.0 through 7.6.2 (vendor-listed versions); FortiPAM: 1.0.0 through 1.5.0 (vendor-listed versions); FortiProxy: 7.0.0 through 7.6.2 (vendor-listed versions)
- Fixed in
- FortiOS 7.6: 7.6.3, FortiOS 7.4: 7.4.8, FortiOS 7.2: 7.2.11 and 12 more below
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
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.
Text from the source record.
- FortiOS: 6.4.0 through 7.6.2 (vendor-listed versions)
- FortiPAM: 1.0.0 through 1.5.0 (vendor-listed versions)
- FortiProxy: 7.0.0 through 7.6.2 (vendor-listed versions)
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2025-57740
Upgrade to a fixed release named by Fortinet:
- FortiOS 7.6: 7.6.3
- FortiOS 7.4: 7.4.8
- FortiOS 7.2: 7.2.11
- FortiOS 7.0: migrate to a fixed release
- FortiOS 6.4: migrate to a fixed release
- FortiPAM 1.5: 1.5.1
- FortiPAM 1.4: 1.4.3
- FortiPAM 1.3: migrate to a fixed release
- FortiPAM 1.2: migrate to a fixed release
- FortiPAM 1.1: migrate to a fixed release
- FortiPAM 1.0: migrate to a fixed release
- FortiProxy 7.6: 7.6.3
- FortiProxy 7.4: 7.4.4
- FortiProxy 7.2: migrate to a fixed release
- FortiProxy 7.0: migrate to a fixed release
Vendor guidance
- Upgrade per the Affected/Solution table: FortiOS 7.6: 7.6.3; FortiOS 7.4: 7.4.8; FortiOS 7.2: 7.2.11; FortiOS 7.0: migrate to a fixed release; FortiOS 6.4: migrate to a fixed release; ….
Support dates for the fixed release lines
- Fortinet FortiOS 7.6: support ends
- Fortinet FortiOS 7.4: support ends
- Fortinet FortiOS 7.2: support ended
- Fortinet FortiOS 7.0: support ended
- Fortinet FortiOS 6.4: support ended
More Fortinet advisories
CVE-2024-47569Oct 14, 2025insertion of sensitive information into sent data vulnerability in Fortinet FortiMailCVE-2025-22258Oct 14, 2025heap-based buffer overflow in Fortinet FortiSRA 1.5.0, 1.4.0 through 1.4.2, FortiPAMCVE-2024-26011Nov 12, 2024FortiManager authentication bypassCVE-2024-26010Jun 11, 2024stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.3, FortiOSCVE-2023-36640May 14, 2024use of externally-controlled format string vulnerability in Fortinet FortiOS 7.4.0CVE-2023-45583May 14, 2024use of externally-controlled format string vulnerability in Fortinet FortiOS 7.4.0
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