# CVE-2025-62675: Fortinet FortiOS and FortiProxy HTTP response splitting in Web Filter

Source: https://junglewise.ai/threats/cve-2025-62675-fortinet-fortios-and-fortiproxy-http-response-splitting-in-web  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2025-62675 · Severity: low · CVSS 3.4 · Published 2026-07-14

Fortinet FortiOS and FortiProxy, which are used to manage and secure corporate network traffic, contain a security flaw in their web filtering component. An attacker could trick a user into clicking a malicious link to inject unauthorized information into the user's web session. While this requires the attacker to possess a specific security token and involves user interaction, it could be used to bypass certain security controls or mislead users.

Technologies: [Fortinet FortiOS](https://junglewise.ai/threats/technologies/fortios), [Fortinet FortiProxy](https://junglewise.ai/threats/technologies/fortiproxy). Vendors: [Fortinet](https://junglewise.ai/threats/vendors/fortinet).

## Quick answers

**Is CVE-2025-62675 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-62675 being exploited in the wild.

**How severe is CVE-2025-62675?** Low severity, with a CVSS score of 3.4, published 14 July 2026.

**Which products and versions are affected?** Fortinet FortiOS 7.6.0 through 7.6.4, 7.4 all versions, 7.2 all versions; Fortinet FortiProxy 7.6.0 through 7.6.4, 7.4 all versions, 7.2 all versions.

**Is there a fix for CVE-2025-62675?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-62675 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2025-62675?** Check whether you run Fortinet FortiOS or Fortinet FortiProxy at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An HTTP Response Splitting vulnerability (CWE-113) exists in the Web Filter warning page of Fortinet FortiOS and FortiProxy. The flaw is caused by improper neutralization of CRLF sequences in HTTP headers. An attacker who possesses a valid web filter override token can exploit this by tricking a user into clicking a specially crafted link, leading to the injection of arbitrary headers. This is categorized as a low-severity issue due to the requirement for a valid token and user interaction (UI:R). Patches are available in FortiOS/FortiProxy versions 7.6.5 and above; users on 7.4 and 7.2 branches are advised to migrate to a fixed release.

## Affected products

- Fortinet FortiOS 7.6.0 through 7.6.4, 7.4 all versions, 7.2 all versions
- Fortinet FortiProxy 7.6.0 through 7.6.4, 7.4 all versions, 7.2 all versions

## Timeline

- 2026-07-14: advisory: Initial publication by Fortinet
- 2026-07-14: disclosed

## References

- [https://fortiguard.fortinet.com/psirt/FG-IR-26-152](https://fortiguard.fortinet.com/psirt/FG-IR-26-152)

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