CVE-2022-26122
Last modified
CVE-2022-26122 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines version 6.2.168 and below and version 6.4.274 and below may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.
Description
An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines version 6.2.168 and below and version 6.4.274 and below may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Antivirus Engine | 0.4.23 |
| Fortinet | Antivirus Engine | 2.0.49 |
| Fortinet | Antivirus Engine | 2.0.60 |
| Fortinet | Antivirus Engine | 4.4.54 |
| Fortinet | Antivirus Engine | 6.33 |
| Fortinet | Antivirus Engine | 6.137 |
| Fortinet | Antivirus Engine | 6.142 |
| Fortinet | Antivirus Engine | 6.144 |
| Fortinet | Antivirus Engine | 6.145 |
| Fortinet | Antivirus Engine | 6.156 |
| Fortinet | Antivirus Engine | 6.157 |
| Fortinet | Antivirus Engine | 6.243 |
| Fortinet | Antivirus Engine | 6.252 |
| Fortinet | Antivirus Engine | 6.253 |
| Fortinet | Fortimail | >= 6.0.0, <= 6.0.12 |
| Fortinet | Fortimail | >= 6.2.0, <= 6.2.9 |
| Fortinet | Fortimail | >= 6.4.0, <= 6.4.6 |
| Fortinet | Fortimail | >= 7.0.0, <= 7.0.2 |
| Fortinet | Fortimail | 4.1.0 |
| Fortinet | Fortios | >= 6.0.0, <= 6.0.15 |
| Fortinet | Fortios | >= 6.2.0, <= 6.2.11 |
| Fortinet | Fortios | >= 6.4.0, <= 6.4.10 |
| Fortinet | Fortios | >= 7.0.0, <= 7.0.6 |
| Fortinet | Fortios | 7.2.0 |
References
- https://fortiguard.com/psirt/FG-IR-22-074Patch, Vendor Advisory
- https://fortiguard.com/psirt/FG-IR-22-074Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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