Critical severity · published Feb 16, 2023
CVE-2021-42761
A condition for session fixation vulnerability [CWE-384] in the session management of FortiWeb versions 6.4 all versions, 6.3.0 through 6.3.16, 6.2.0 through 6.2.6, 6.1.0 through…
9.8
CVSS
1.5%
EPSS
No
On KEV
Description
A condition for session fixation vulnerability [CWE-384] in the session management of FortiWeb versions 6.4 all versions, 6.3.0 through 6.3.16, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 through 6.0.7, 5.9.0 through 5.9.1 may allow a remote, unauthenticated attacker to infer the session identifier of other users and possibly usurp their session.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortiweb · Fortinet
5.6.0 before 5.9.2; 6.0.0 before 6.0.8; 6.1.0 before 6.1.3; 6.2.0 before 6.2.7; 6.3.0 before 6.3.17; 6.4.0 before 7.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42761
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42761
Vendor Advisory
https://fortiguard.com/psirt/FG-IR-21-214
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