High severity · published Jul 9, 2021
CVE-2021-22129
Multiple instances of incorrect calculation of buffer size in the Webmail and Administrative interface of FortiMail before 6.4.5 may allow an authenticated attacker with regular…
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
Multiple instances of incorrect calculation of buffer size in the Webmail and Administrative interface of FortiMail before 6.4.5 may allow an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortimail · Fortinet
through 5.4.12; 5.6.1 before 6.0.11; 6.2.0 before 6.2.7; 6.4.0 before 6.4.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22129
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22129
Vendor Advisory
https://fortiguard.com/advisory/FG-IR-21-023
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