CVE-2021-26091

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.

Remediation

Solution:

  • Please upgrade to FortiMail version 7.0.0 or above Please upgrade to FortiMail version 6.4.5 or above

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Affected: Fortinet FortiMail
Published at:
Updated at:

References

Link Tags
https://fortiguard.com/advisory/FG-IR-21-031

Frequently Asked Questions

What is the severity of CVE-2021-26091?
CVE-2021-26091 has been scored as a high severity vulnerability.
How to fix CVE-2021-26091?
To fix CVE-2021-26091: Please upgrade to FortiMail version 7.0.0 or above Please upgrade to FortiMail version 6.4.5 or above
Is CVE-2021-26091 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-26091 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-26091?
CVE-2021-26091 affects Fortinet FortiMail.
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