UpHeron
All vulnerabilities

Servers and applications

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 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.

Severity
Critical 9.8
Published
16 Feb 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
5.9.2, 6.0.8, 6.1.3, 6.2.7, 6.3.17, 7.0.0
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiWebServers and applications · cpe:a:fortinet:fortiweb
  • From 5.6.0 before 5.9.2
  • From 6.0.0 before 6.0.8
  • From 6.1.0 before 6.1.3
  • From 6.2.0 before 6.2.7
  • From 6.3.0 before 6.3.17
  • From 6.4.0 before 7.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-42761
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-42761