PT-2025-41955 · Fortinet · Fortisase+2

Published 2025-10-14 · Updated 2025-10-22 · CVE-2025-47890

Positive Technologies (AI Summary)

CVSS v2.0

6.4

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions FortiOS versions 6.4 through 7.6.2 FortiProxy versions 7.0 through 7.6.3 FortiSASE version 25.2.a

Description An URL Redirection to Untrusted Site issue exists in FortiOS, FortiProxy, and FortiSASE. This allows an unauthenticated attacker to perform an open redirect attack via crafted HTTP requests. The issue is related to improper handling of redirects to untrusted sites, potentially leading to phishing or other malicious activities.

Recommendations FortiOS versions prior to 7.6.2 should be updated. FortiProxy versions prior to 7.6.3 should be updated. FortiSASE version 25.2.a should be updated.

Fix

Open Redirect

XSS

Weakness Enumeration

CWE-601

CWE-79

Related Identifiers

BDU:2026-05209

CVE-2025-47890

Affected Products

Fortios

Fortiproxy

Fortisase

References · 8

• https://fortiguard.fortinet.com/psirt/FG-IR-24-542 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05209 · Security Note
• https://osv.dev/vulnerability/CVE-2025-47890 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-47890 · Security Note
• https://t.me/CVEtracker/34857 · Telegram Post
• https://t.me/cveNotify/139909 · Telegram Post
• https://twitter.com/CVEnew/status/1978932605530837305 · Twitter Post
• https://t.me/cveNotify/138580 · Telegram Post