CVE-2021-41024Network attack vector

Unauthenticated information disclosure via login path traversal

Published Dec 8, 2021 · Updated Oct 25, 2024

Relative path traversal in Fortinet FortiOS 7.0.0 and 7.0.1 allows remote attackers to read sensitive server data through a login-page GET request. The login-page request path fails to reject relative traversal sequences before resolving the requested resource outside its intended location. No authentication or user interaction is required; the documented impact is information disclosure, not data modification or service interruption.

CVSS severity7.5
High
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Relative path traversal in Fortinet FortiOS 7.0.0 and 7.0.1 allows remote attackers to read sensitive server data through a login-page GET request. The login-page request path fails to reject relative traversal sequences before resolving the requested resource outside its intended location. No authentication or user interaction is required; the documented impact is information disclosure, not data modification or service interruption.

The record

CVE
CVE-2021-41024
Published
Dec 8, 2021
Updated
Oct 25, 2024
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-23, CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2021CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=FortiOS 7.0.1, 7.0.0 FortiProxy 7.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiOSversion=FortiOS 7.0.1, 7.0.0 FortiProxy 7.0.0

Published CVSS scores

7.5FortinetCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

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-23Relative Path Traversal
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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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