Fortinet FortiMail: Format string vulnerability (CVE-2026-126163)
A use of externally-controlled format string vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1 may allow a remote unauthenticated attacker to execute unauthorized code or commands via a specially crafted SMTP command.
CVE search metadata
CVE search record: CVE-2026-126163. Severity: high. CVSS: 8.1. KEV: no. Product: FortiMail. Brief: Fortinet FortiMail: Format string vulnerability (CVE-2026-126163). Brief link: https://feed.craftedsignal.io/briefs/2026-11-fortinet-fortimail-cve-2026-126163/
Triage facts
Revision 1- Applicability
- FortiMail
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 12, 00:14 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
CVE-2026-126163 is a use of externally-controlled format string vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1. This vulnerability may allow a remote unauthenticated attacker to execute unauthorized code or commands via a specially crafted SMTP command. The vulnerability has a CVSS v3.1 base score of 8.1.