Vulnerability in Fortinet Fortios
CVE-2025-62826
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0
- Fortinet Fortipam — versions 1.7.0, 1.6.0, 1.5.0
- Fortinet Fortiproxy — versions 7.6.0, 7.4.0, 7.2.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-62826?
- CVE-2025-62826 is a low-severity vulnerability in Fortinet Fortios, classified under HTTP Response Splitting. CVSS score: 3.1/10. Published 2026-07-14.
- How severe is CVE-2025-62826?
- Low severity. CVSS v3 base score is 3.1 out of 10.