CVE-2025-62675: Execute unauthorized code or commands in Fortinet FortiOS
CVE-2025-62675 is a vulnerability in Fortinet FortiOS and FortiProxy products that allows HTTP response splitting via improper neutralization of CRLF sequences in HTTP headers. This issue affects FortiOS versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2, and FortiProxy versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2. An attacker with a valid web filter override token can inject arbitrary HTTP headers by tricking a user into clicking a crafted link. The vulnerability has a low CVSS score of 3.4 and has an official fix available.
AI Analysis
Technical Summary
CVE-2025-62675 is an HTTP response splitting vulnerability (CWE-113) in Fortinet FortiOS and FortiProxy products. It arises from improper neutralization of CRLF sequences in HTTP headers, allowing an attacker who possesses a valid web filter override token to inject arbitrary headers by convincing a user to click a maliciously crafted link. This vulnerability affects FortiOS versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2, and FortiProxy versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2. The issue has been assigned a CVSS v3.1 base score of 3.4, indicating low severity. An official patch is available to remediate this vulnerability.
Potential Impact
The vulnerability allows an attacker with a valid web filter override token to inject arbitrary HTTP headers via HTTP response splitting. This could lead to limited impact such as manipulation of HTTP responses or headers, but does not directly compromise confidentiality or availability. The CVSS score of 3.4 reflects low impact with no confidentiality or availability loss and only low integrity impact.
Mitigation Recommendations
An official fix is available for this vulnerability. Users should apply the vendor-provided patches to affected FortiOS and FortiProxy versions. Since the remediation level is 'official-fix', applying the patch is the recommended mitigation. No additional mitigation steps are indicated by the vendor advisory.
CVE-2025-62675: Execute unauthorized code or commands in Fortinet FortiOS
Description
CVE-2025-62675 is a vulnerability in Fortinet FortiOS and FortiProxy products that allows HTTP response splitting via improper neutralization of CRLF sequences in HTTP headers. This issue affects FortiOS versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2, and FortiProxy versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2. An attacker with a valid web filter override token can inject arbitrary HTTP headers by tricking a user into clicking a crafted link. The vulnerability has a low CVSS score of 3.4 and has an official fix available.
CVSS v3.1
Score 3.4low
Affected software
cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.1:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.0:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.4.14:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-62675 is an HTTP response splitting vulnerability (CWE-113) in Fortinet FortiOS and FortiProxy products. It arises from improper neutralization of CRLF sequences in HTTP headers, allowing an attacker who possesses a valid web filter override token to inject arbitrary headers by convincing a user to click a maliciously crafted link. This vulnerability affects FortiOS versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2, and FortiProxy versions 7.6.0 through 7.6.4, all versions of 7.4 and 7.2. The issue has been assigned a CVSS v3.1 base score of 3.4, indicating low severity. An official patch is available to remediate this vulnerability.
Potential Impact
The vulnerability allows an attacker with a valid web filter override token to inject arbitrary HTTP headers via HTTP response splitting. This could lead to limited impact such as manipulation of HTTP responses or headers, but does not directly compromise confidentiality or availability. The CVSS score of 3.4 reflects low impact with no confidentiality or availability loss and only low integrity impact.
Mitigation Recommendations
An official fix is available for this vulnerability. Users should apply the vendor-provided patches to affected FortiOS and FortiProxy versions. Since the remediation level is 'official-fix', applying the patch is the recommended mitigation. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-10-20T08:07:37.650Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a565a3968715ace43c7b5a5
Added to database: 07/14/2026, 15:48:09 UTC
Last enriched: 07/14/2026, 16:23:31 UTC
Last updated: 07/14/2026, 21:10:59 UTC
Views: 4
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