CVE-2021-26091

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-338

Affected software

No affected versions have been published.

Timeline

Published: Mar 24, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

Related CVEs from 2021

CVE-2021-260926.1Failure to sanitize input in the SSL VPN web portal of FortiOS 5.2.10 through 5.2.15, 5.4.0 through 5.4.13, 5.6.0 through 5.6.14, 6.0.0 thro CVE-2021-260936.5An access of uninitialized pointer (CWE-824) vulnerability in FortiWLC versions 8.6.0, 8.5.3 and earlier may allow a local and authenticated CVE-2021-260958.8The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, includin CVE-2021-260968.8Multiple instances of heap-based buffer overflow in the command shell of FortiSandbox before 4.0.0 may allow an authenticated attacker to ma CVE-2021-260978.8An improper neutralization of special elements used in an OS Command vulnerability in FortiSandbox 3.2.0 through 3.2.2, 3.1.0 through 3.1.4,CVE-2021-260987.5An instance of small space of random values in the RPC API of FortiSandbox before 4.0.0 may allow an attacker in possession of a few informa CVE-2021-260994.9Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession CVE-2021-261007.5A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who in CVE-2021-261029.1A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated CVE-2021-261038.8An insufficient verification of data authenticity vulnerability (CWE-345) in the user interface of FortiProxy verison 2.0.3 and below, 1.2.1 CVE-2021-261047.8Multiple OS command injection (CWE-78) vulnerabilities in the command line interface of FortiManager 6.2.7 and below, 6.4.5 and below and al CVE-2021-261058.8A stack-based buffer overflow vulnerability (CWE-121) in the profile parser of FortiSandbox version 3.2.2 and below, version 3.1.4 and below