CVE-2021-32586Network attack vector

Unauthenticated code execution via CGI environment manipulation

Published Mar 1, 2022 · Updated Oct 25, 2024

Improper input validation in Fortinet FortiMail before 7.0.1 allows remote attackers to execute unauthorized code via crafted HTTP requests. The web server's CGI facilities accept attacker-controlled request data as environment parameters for the underlying script interpreter without adequate validation. No authentication or user interaction is required; Fortinet reports code or command execution and no known exploitation.

CVSS severity7.7
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Fortinet FortiMail before 7.0.1 allows remote attackers to execute unauthorized code via crafted HTTP requests. The web server's CGI facilities accept attacker-controlled request data as environment parameters for the underlying script interpreter without adequate validation. No authentication or user interaction is required; Fortinet reports code or command execution and no known exploitation.

The record

CVE
CVE-2021-32586
Published
Mar 1, 2022
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiMail
Classifications
CWE-20, CAPEC-13, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FortiMail before 7.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiMailversion=FortiMail before 7.0.1

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.7Fortinet, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CAPEC-13Subverting Environment Variable Values
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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