CVE-2021-26091

High

Description

A use of a cryptographically weak pseudo-random number generator vulnerability in the authenticator of the Identity Based Encryption service of FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to infer parts of users authentication tokens and reset their credentials.

SeverityHigh
CVSS7.5
Exploit probability—
ProductFortinet Fortimail
PublishedMar 24, 2025
First seenMar 24, 2025
Weakness typeCWE-338CWE-338

How to fix

Update
  • fortinet fortimail6.4.5 or later

Affected products

ProductAffected versionsFixed in
fortinet fortimail6.2.0 ≤ v < 6.4.56.4.5

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