CVE-2022-26122

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.7 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
fortinetCNA
4.7 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:P/RL:U/RC:R
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 27%
VendorProductVersion
fortinetantivirus_engine
0.4.23
fortinetantivirus_engine
2.0.49
fortinetantivirus_engine
2.0.60
fortinetantivirus_engine
4.4.54
fortinetantivirus_engine
6.33
fortinetantivirus_engine
6.137
fortinetantivirus_engine
6.142
fortinetantivirus_engine
6.144
fortinetantivirus_engine
6.145
fortinetantivirus_engine
6.156
fortinetantivirus_engine
6.157
fortinetantivirus_engine
6.243
fortinetantivirus_engine
6.252
fortinetantivirus_engine
6.253
fortinetfortimail
6.0.0 ≤
𝑥
≤ 6.0.12
fortinetfortimail
6.2.0 ≤
𝑥
≤ 6.2.9
fortinetfortimail
6.4.0 ≤
𝑥
≤ 6.4.6
fortinetfortimail
7.0.0 ≤
𝑥
≤ 7.0.2
fortinetfortimail
4.1.0
fortinetfortios
6.0.0 ≤
𝑥
≤ 6.0.15
fortinetfortios
6.2.0 ≤
𝑥
≤ 6.2.11
fortinetfortios
6.4.0 ≤
𝑥
≤ 6.4.10
fortinetfortios
7.0.0 ≤
𝑥
≤ 7.0.6
fortinetfortios
7.2.0
𝑥
= Vulnerable software versions