CVE-2025-25248: Denial of service in Fortinet FortiOS
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and 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 SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.
AI Analysis
Technical Summary
This vulnerability is an integer overflow or wraparound (CWE-190) in Fortinet FortiOS versions 7.6.2 and below, 7.4.7 and below, 7.2.10 and below, and all versions of 7.2 and 6.4; FortiProxy versions 7.6.2 and below, 7.4.3 and below, and all versions of 7.2, 7.0, and 2.0; and FortiPAM versions 1.5.0, 1.4.2 and below, and all versions of 1.3, 1.2, 1.1, and 1.0. The vulnerability affects the SSL-VPN RDP and VNC bookmarks feature, allowing an authenticated user to send crafted requests that may cause a denial of service by impacting the device's SSL-VPN availability. The CVSS v3.1 score is 4.8, indicating medium severity, with attack vector network, attack complexity high, low privileges required, no user interaction, and impact limited to availability. There is no information on known exploits in the wild or official patches.
Potential Impact
An authenticated user can exploit this vulnerability to cause a denial of service condition on the affected Fortinet devices by sending specially crafted requests targeting the SSL-VPN RDP and VNC bookmarks feature. This results in disruption of SSL-VPN availability, impacting device availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor Fortinet advisories for updates. Until a fix is available, restrict authenticated user access to the SSL-VPN bookmarks feature if possible and apply any recommended configuration changes from Fortinet advisories.
CVE-2025-25248: Denial of service in Fortinet FortiOS
Description
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and 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 SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.
CVSS v3.1
Score 4.8medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is an integer overflow or wraparound (CWE-190) in Fortinet FortiOS versions 7.6.2 and below, 7.4.7 and below, 7.2.10 and below, and all versions of 7.2 and 6.4; FortiProxy versions 7.6.2 and below, 7.4.3 and below, and all versions of 7.2, 7.0, and 2.0; and FortiPAM versions 1.5.0, 1.4.2 and below, and all versions of 1.3, 1.2, 1.1, and 1.0. The vulnerability affects the SSL-VPN RDP and VNC bookmarks feature, allowing an authenticated user to send crafted requests that may cause a denial of service by impacting the device's SSL-VPN availability. The CVSS v3.1 score is 4.8, indicating medium severity, with attack vector network, attack complexity high, low privileges required, no user interaction, and impact limited to availability. There is no information on known exploits in the wild or official patches.
Potential Impact
An authenticated user can exploit this vulnerability to cause a denial of service condition on the affected Fortinet devices by sending specially crafted requests targeting the SSL-VPN RDP and VNC bookmarks feature. This results in disruption of SSL-VPN availability, impacting device availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor Fortinet advisories for updates. Until a fix is available, restrict authenticated user access to the SSL-VPN bookmarks feature if possible and apply any recommended configuration changes from Fortinet advisories.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-02-05T13:31:18.866Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 689b8fe3ad5a09ad0035cd7d
Added to database: 08/12/2025, 19:02:59 UTC
Last enriched: 08/11/2026, 13:06:32 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 168
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