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Fortinet FortiOS and FortiProxy SSL-VPNHeap buffer overflow in sslvpn pre-authentication

Risk 99
Severity
9.8
Exploited
Zeroday
Buffer Overflow
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:R

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS and FortiProxy SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Workaround:

Disable SSL-VPN.

1 / 3
Source: FortiGuard
First published (updated )
CVE-2023-27997

Fortinet FortiOSImproper autorization over static files

Risk 22
Severity
4.3
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:F/RL:X/RC:C

An improper authorization vulnerability [CWE-285] in FortiOS & FortiProxy may allow an authenticated attacker to access static files of others VDOMs via crafted HTTP or HTTPS requests.

1 / 2
Source: FortiGuard

Remedy

Upgrade to FortiProxy version 7.6.0 or above Upgrade to FortiProxy version 7.4.9 or above Upgrade to FortiPAM version 1.4.0 or above Upgrade to FortiOS version 7.6.0 or above Upgrade to FortiOS version 7.4.2 or above Upgrade to FortiOS version 7.2.9 or above
First published (updated )
CVE-2025-54822

Fortinet FortiOSStored XSS in guest management page

Risk 74
Severity
8
XSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiOS and FortiProxy GUI may allow an authenticated attacker to trigger malicious JavaScript code execution via crafted guest management setting.

1 / 2
Source: FortiGuard

Remedy

Please upgrade to FortiProxy version 7.2.5 or above Please upgrade to FortiProxy version 7.0.11 or above Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.5 or above Please upgrade to FortiOS version 7.0.12 or above Please upgrade to FortiOS version 6.4.13 or above Please upgrade to FortiOS version 6.2.15 or above
First published (updated )
CVE-2023-29183

Fortinet FortiOSImproper authorization via prof-admin profile

Risk 81
Severity
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

An improper authorization vulnerability [CWE-285] in FortiOS's WEB UI component may allow an authenticated attacker belonging to the prof-admin profile to perform elevated actions.

1 / 2
Source: FortiGuard

Remedy

Please upgrade to FortiOS version 7.4.0 or above Please upgrade to FortiOS version 7.2.5 or above Please upgrade to FortiOS version 7.0.12 or above
First published (updated )
CVE-2023-41841

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