HIGHCVSS 8.1Actively exploited · CISA KEV since 2026-09-09Vulnerability

CVE-2025-25249

Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows an attacker to execute unauthorized code or commands via specially crafted packets.

Properties

Euvd product
FortiOS, FortiSwitchManager
Vulnerability name
Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
First seen
2026-10-15T01:05:48+00:00
Cvss score
8.1
Epss score
0.03802
Last seen
2026-10-19T12:00:27+00:00
Due date
2026-09-12
Euvd assigner
fortinet
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2026-09-09T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2026-09-09
Euvd base score version
3.1
Score
8.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Fortinet
Cvss vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
7.4

Related Entities (12)

AFFECTS_PRODUCT (6)

→[Product]cpe:2.3:a:fortinet:fortisase:25.1.51:*:*:*:-:*:*:*
→[Product]cpe:2.3:h:siemens:ruggedcom_ape1808:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:fortinet:fortisase:25.1.39:*:*:*:-:*:*:*
→[Product]cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:*

HAS_WEAKNESS (2)

→[Weakness]Heap-based Buffer Overflow
→[Weakness]Out-of-bounds Write

MENTIONED_IN (2)

→[Campaign]Unnamed campaign (ID 6971…)
→[Campaign]Malicious Configuration Changes Observed On Fortinet FortiGate Devices via SSO Accounts

DESCRIBES (1)

←[KEVEntry]Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability

INVOLVES (1)

←[Signal]kev_added · 2026-09-09

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CVE-2025-25249 (CVSS 8.1) — Ninja Signal Threat Intelligence | Ninja Signal