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TI-2021-08042 Aliases CVE-2021-26090GHSA-j48p-m2m2-h4m7

Memory leak in Fortinet FortiMail

Priority MEDIUM 42CWE-401Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01328 71st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortinet FortiMailFortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6—No fix listedCNA
  • Fortinet FortiMail VendorFortinet Affected FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*6.2.0 – 6.2.6; 6.4.0 to before 6.4.5VulnerableFortinet
  • cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:* Versions 6.2.0 – 6.2.6; 6.4.0 to before 6.4.5 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26090
  2. 2026-10-03 Alias added: GHSA-j48p-m2m2-h4m7

References

Advisory 1

  • TI-2026-65779 Path traversal in Fortinet FortiMail KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23811 Stack-based buffer overflow in Fortinet FortiNDR KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-07433 Improper authentication in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
  • TI-2021-14584 An improper authentication vulnerability in FortiMail before 7.0.1 may allow a remote… CVSS 3.1CRITICAL 9.8
  • TI-2021-06324 SQL injection in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
  • TI-2023-25708 Improper access control in Fortinet FortiMail CVSS 3.1CRITICAL 9.0
See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences