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Critical severity9.0NVD Advisory· Published Feb 16, 2023· Updated Jun 17, 2026

CVE-2021-42761

CVE-2021-42761

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.

Affected products

4
  • Fortinet/Fortiweb3 versions
    cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*range: >=5.6.0,<5.9.2
    • (no CPE)range: 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
    • (no CPE)range: 6.4.0
  • FortiWeb/FortiWebllm-fuzzy
    Range: 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

Patches

Vulnerability mechanics

References

1

News mentions

0

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