What’s Vulnerable › Vulnerabilities
CVE-2021-26090
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-07-12 · updated 2026-06-17
- Weakness: CWE-401
Description
A missing release of memory after its effective lifetime vulnerability in the Webmail of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6 may allow an unauthenticated remote attacker to exhaust available memory via specifically crafted login requests.
Affected products
- Fortinet FortiMail: from 6.2.0 through 6.2.6; from 6.4.0 before 6.4.5 — fixed in 6.4.5
How to fix
Upgrade to a fixed version: Fortinet FortiMail 6.4.5. Check the vendor advisory for mitigations.
References
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