CVE-2025-62675
CVSSv3 Score: 3.4 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] in FortiOS and FortiProxy may allow an attacker in possession of a valid web filter override token to inject arbitrary headers via tricking a user into clicking on a crafted link. Revised on 2026-07-14 00:00:00
CSIRTS triage
- What
- An attacker may inject arbitrary headers via tricking a user into clicking on a crafted link.
- Who is affected
- Users of FortiOS and FortiProxy with web filter override tokens.
- Urgency
- Remediation is necessary to prevent header injection attacks.
- Action
- Review and update web filter configurations.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Advisory coverage (4)
- low[NEW] [low] Fortinet FortiProxy and FortiOS: Multiple vulnerabilitiescert-bund · 2026-07-15
- unknownMultiple vulnerabilities in Fortinet products (July 15, 2026)cert-fr-avis · 2026-07-15
- lowCVE-2025-62675: An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulne…nvd · 2026-07-14
- unknownHeader injection in Web Filter warning pagefortinet · 2026-07-14
External references
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