Cyber Resilience

CVE-2025-47890

Open Redirect in Fortinet Fortios 6.4.0 – 7.4.9

Open Redirect
Published
14 October 2025
Modified
08 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 2.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS Score 0.0024 14th percentile
Risk Priority 24 floored blend · peak EPSS

Summary

CVE-2025-47890 is a low-severity Open Redirect (CWE-601) vulnerability in Fortinet Fortios. Its CVSS base score is 2.6 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Phishing (T1566); ranked at the 14th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

An URL Redirection to Untrusted Site vulnerabilities [CWE-601] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4 all versions, FortiProxy…

more

7.2 all versions, FortiProxy 7.0 all versions, FortiSASE 25.2.a may allow an unauthenticated attacker to perform an open redirect attack via crafted HTTP requests.

CWE(s)
CWE-601

Related Threats

MITRE ATT&CK Enterprise Techniques

T1566 Phishing Initial Access
Adversaries may send phishing messages to gain access to victim systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-22641Same product: Fortinet Fortios
CVE-2025-31366Same product: Fortinet Fortios
CVE-2024-55599Same product: Fortinet Fortios
CVE-2023-29184Same product: Fortinet Fortios
CVE-2023-22639Same product: Fortinet Fortios
CVE-2025-25253Same product: Fortinet Fortios
CVE-2025-24472Same product: Fortinet Fortios
CVE-2023-33308Same product: Fortinet Fortios
CVE-2018-13383Same product: Fortinet Fortios
CVE-2023-28002Same product: Fortinet Fortios

Affected Assets

fortinet
fortios
6.4.0 — 7.4.9 · 7.6.0 — 7.6.4
fortinet
fortiproxy
7.0.0 — 7.6.4
fortinet
fortisase
25.3.40

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.7.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly checks and rejects untrusted redirect targets before they are used in a response.

AC-4 Information Flow Enforcement partial match

Information flow enforcement can restrict redirects to only approved/trusted destinations, stopping untrusted user-supplied URLs from being followed.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and untrusted-redirect controls that prevent CWE-601.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.23 Web filtering partial match
mitigates

Preventing access to attacker-controlled or malicious sites stops users from being redirected to untrusted locations via open-redirect or phishing links.

References