Back to Database
Status published
High
CVE-2021-42761
A condition for session fixation vulnerability [CWE-384] in the session management of...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-42761
Credits & Attribution
No credits recorded in the NVD database.
References
More from Fortinet
View All →CVE-2025-68686
An Exposure of Sensitive Information to an Unauthorized Actor vulnerability...
Medium
5.3
CVE-2025-68649
An improper limitation of a pathname to a restricted directory...
Medium
5.4
CVE-2025-68648
A use of externally-controlled format string vulnerability in Fortinet FortiAnalyzer...
Medium
6.5
CVE-2025-68482
A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through...
Medium
6.3
CVE-2025-67862
An Internal Asset Exposed to Unsafe Debug Access Level or...
Medium
6
Affected Vendor
Fortinet
View all reports →Affected Software
FortiWeb
Vulnerable Versions:
6.4.0, 6.3.0, 6.2.0, 6.1.0, 6.0.0, 5.9.0, 5.8.5, 5.8.0, 5.7.0, 5.6.0
Timeline
Official Publish:
February 16th, 2023
Last Modified:
October 23rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:U/RC:C