CVE-2020-9295

Published Mar 17, 2025 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Description
FortiOS 6.2 running AV engine version 6.00142 and below, FortiOS 6.4 running AV engine version 6.00144 and below and FortiClient 6.2 running AV engine version 6.00137 and below may not immediately detect certain types of malformed or non-standard RAR archives, potentially containing malicious files. Based on the samples provided, FortiClient will detect the malicious files upon trying extraction by real-time scanning and FortiGate will detect the malicious archive if Virus Outbreak Prevention is enabled.

Remediation

Vendor Solution

FortiOS 6.2 running AV engine version 6.00145 or later. FortiOS 6.4 running AV engine version 6.00145 or later. FortiClient 6.2 running AV engine version 6.00145 or later. FortiClient 6.4 running AV engine version 6.00243 or later. Workaround for FortiGate: Enable Virus Outbreak Prevention feature.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-30121 FortiOS 6.2 running AV engine version 6.00142 and below, FortiOS 6.4 running AV engine version 6.00144 and below and FortiClient 6.2 running AV engine version 6.00137 and below may not immediately detect certain types of malformed or non-standard RAR archives, potentially containing malicious files. Based on the samples provided, FortiClient will detect the malicious files upon trying extraction by real-time scanning and FortiGate will detect the malicious archive if Virus Outbreak Prevention is enabled.
References
History
Type Values Removed Values Added
First Time appeared Fortinet antivirus Engine
CPEs cpe:2.3:a:fortinet:antivirus_engine:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Vendors & Products Fortinet antivirus Engine
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description FortiOS 6.2 running AV engine version 6.00142 and below, FortiOS 6.4 running AV engine version 6.00144 and below and FortiClient 6.2 running AV engine version 6.00137 and below may not immediately detect certain types of malformed or non-standard RAR archives, potentially containing malicious files. Based on the samples provided, FortiClient will detect the malicious files upon trying extraction by real-time scanning and FortiGate will detect the malicious archive if Virus Outbreak Prevention is enabled.
Weaknesses CWE-358
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:X/RC:X'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fortinet
Published
Updated
Mar 17, 2025, 5:57 PM
Reserved
Feb 19, 2020, 12:00 AM
Status
Analyzed
Published
Mar 17, 2025, 2:15 PM
Modified
Jun 17, 2026, 3:27 AM