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CVE-2025-62826

An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113] vulnerability in Fortinet…

Low3.1EPSS 0.37%
Published
Updated
Reserved
Assigned by
fortinet

Description

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.

Scores

CVSS scores of CVE-2025-62826, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Low3.1CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
NVDNVD · Modified3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS (exploitation in 30 days)
0.37% · top 69% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.1.

Weakness

Affected products

  • Fortinet · FortiPAM

    • affected 1.7.0
    • affected 1.6.0 – ≤ 1.6.2
    • affected 1.5.0 – ≤ 1.5.1
    • affected 1.4.0 – ≤ 1.4.3
    • affected 1.3.0 – ≤ 1.3.1
    • affected 1.2.0
    • affected 1.1.0 – ≤ 1.1.2
    • affected 1.0.0 – ≤ 1.0.3

  • Fortinet · FortiProxy

    • affected 7.6.0 – ≤ 7.6.4
    • affected 7.4.0 – ≤ 7.4.14
    • affected 7.2.0 – ≤ 7.2.16
    • affected 7.0.0 – ≤ 7.0.23

  • Fortinet · FortiOS

    • affected 7.6.0 – ≤ 7.6.2
    • affected 7.4.0 – ≤ 7.4.8
    • affected 7.2.0 – ≤ 7.2.13
    • affected 7.0.0 – ≤ 7.0.19
    • affected 6.4.0 – ≤ 6.4.16

What to do

Solution: Upgrade to FortiProxy version 7.6.5 or above Upgrade to upcoming FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.5 or above Fortinet remediated this issue in FortiSASE version 25.4.b and hence customers do not need to perform any action. Fortinet remediated this issue in FortiSASE version 25.4.a and hence customers do not need to perform any action.

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .