8.1
HIGH
CVSS 3.1
CVE-2026-126163
Fortinet FortiMail Format String Vulnerability
Overview
Description
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.
Details
INFO
Published Date :
Nov. 11, 2026, 9:29 p.m.
Last Modified :
Nov. 11, 2026, 9:29 p.m.
Remotely Exploit :
Yes !
Source :
fortinet
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 6abe59d8-c742-4dff-8ce8-9b0ca1073da8 |
Solution
Update FortiMail to a version addressing the format string vulnerability to prevent code execution.
- Update FortiMail to a patched version.
- Apply vendor security advisories immediately.
- Restrict access to SMTP service.
- Monitor network traffic for suspicious SMTP commands.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-126163 vulnerability anywhere in the article.
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.