High severity · published Jul 20, 2021
CVE-2021-26095
The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the…
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.
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)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortimail · Fortinet
6.2.0 through 6.2.6; 6.4.0 before 6.4.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26095
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26095
Vendor Advisory
https://fortiguard.com/advisory/FG-IR-21-019
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