FortinetCVE-2025-62826
An Improper Neutralization of CRLF Sequences in HTTP Headers
Low3.1CVE-2025-62826 · Published Jul 14, 2026 · updated Aug 11, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| FortiOS Product | >= 7.6.0, <= 7.6.2 | No fix yet |
| >= 7.4.0, <= 7.4.8 | No fix yet | |
| >= 7.2.0, <= 7.2.13 | No fix yet | |
| >= 7.0.0, <= 7.0.19 | No fix yet | |
| FortiPAM Product | <= 1.7.0 | No fix yet |
| >= 1.6.0, <= 1.6.2 | No fix yet | |
| >= 1.5.0, <= 1.5.1 | No fix yet | |
| >= 1.4.0, <= 1.4.3 | No fix yet | |
| FortiProxy Product | >= 7.6.0, <= 7.6.4 | No fix yet |
| >= 7.4.0, <= 7.4.14 | No fix yet | |
| >= 7.2.0, <= 7.2.16 | No fix yet | |
| >= 7.0.0, <= 7.0.23 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-113
More Fortinet advisories
All Fortinet| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 14 | Fortinet FortiOS: path traversal | Medium5.5 | No fix yet |
| Jul 14 | Fortinet FortiOS: information disclosure | Medium4.3 | No fix yet |
| Jul 14 | Fortinet FortiSIEMWindowsAgent: privilege escalation | High7.5 | No fix yet |
| Jul 14 | Fortinet FortiSandbox: unauthenticated attacker could access the VNC server of... | High8.6 | No fix yet |
| Jul 14 | Fortinet FortiClientEMS: improper certificate validation | High7.5 | No fix yet |
| Jul 14 | Fortinet FortiOS: stack buffer overflow | Medium6.6 | No fix yet |