An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an attacker able to intercept and modify a user's captive portal authentication request to inject arbitrary headers via crafted HTTP requests.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Fortinet FortiPAM unaffected
Version Status Constraints
1.7.0 affected —
1.6.0 affected ≤ 1.6.2
1.5.0 affected ≤ 1.5.1
1.4.0 affected ≤ 1.4.3
1.3.0 affected ≤ 1.3.1
1.2.0 affected —
1.1.0 affected ≤ 1.1.2
1.0.0 affected ≤ 1.0.3
Fortinet FortiProxy unaffected
Version Status Constraints
7.6.0 affected ≤ 7.6.4
7.4.0 affected ≤ 7.4.14
7.2.0 affected ≤ 7.2.16
7.0.0 affected ≤ 7.0.23
Fortinet FortiOS unaffected
Version Status Constraints
7.6.0 affected ≤ 7.6.2
7.4.0 affected ≤ 7.4.8
7.2.0 affected ≤ 7.2.13
7.0.0 affected ≤ 7.0.19
6.4.0 affected ≤ 6.4.16

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Fortinet Subscribe
Fortios Subscribe
Fortipam Subscribe
Fortiproxy Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to FortiProxy version 7.6.5 or above Upgrade to upcoming FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.5 or above Fortinet remediated this issue in FortiSASE version 25.4.b and hence customers do not need to perform any action. Fortinet remediated this issue in FortiSASE version 25.4.a and hence customers do not need to perform any action.

Workaround

No workaround given by the vendor.

References
Link Providers
https://fortiguard.fortinet.com/psirt/FG-IR-26-153 cve-icon
History

Tue, 14 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 14 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Description An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an attacker able to intercept and modify a user's captive portal authentication request to inject arbitrary headers via crafted HTTP requests.
First Time appeared Fortinet
Fortinet fortios
Fortinet fortipam
Fortinet fortiproxy
Weaknesses CWE-113
CPEs cpe:2.3:a:fortinet:fortiproxy:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.12:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.13:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.14:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.15:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.16:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.17:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.18:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.19:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.20:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.21:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.22:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.23:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.0.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.12:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.13:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.14:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.15:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.16:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.2.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.10:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.11:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.12:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.13:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.14:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.6:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.7:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.8:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.9:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.11:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.13:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.14:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.15:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.16:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.7:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.4.9:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.11:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.13:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.14:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.15:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.16:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.17:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.18:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.19:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.7:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.8:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.0.9:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.10:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.12:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.13:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.7:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.8:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.2.9:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.4:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.5:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.6:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.7:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.8:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.0.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.1.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.2.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.3.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.3.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.4.3:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.5.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.6.2:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.7.0:*:*:*:*:*:*:*
Vendors & Products Fortinet
Fortinet fortios
Fortinet fortipam
Fortinet fortiproxy
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: fortinet

Published:

Updated: 2026-07-14T16:02:27.387Z

Reserved: 2025-10-23T11:55:45.919Z

Link: CVE-2025-62826

cve-icon Vulnrichment

Updated: 2026-07-14T16:02:24.269Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses