---
title: "CVE-2025-32756: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability"
url: https://erroneo.us/security/cve/CVE-2025-32756/
description: "CVE-2025-32756 (Fortinet Multiple Products): Exploited in the wild (CISA KEV). A stack-based buffer overflow vulnerability [CWE-121] vulnerability in…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-05-13
date_modified: 2026-02-26
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-32756"
kev: true
cvss: 9.6
epss: 0.30944
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-32756: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Fortinet Multiple Products. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-05-14, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-06-04 ; treat that as the outer limit, not the target.
- EPSS 30.9% , percentile 98: FIRST’s model estimates a 30.9% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

A stack-based buffer overflow vulnerability [CWE-121] vulnerability in Fortinet FortiCamera 2.1.0 through 2.1.3, FortiCamera 2.0 all versions, FortiCamera 1.1 all versions, FortiMail 7.6.0 through 7.6.2, FortiMail 7.4.0 through 7.4.4, FortiMail 7.2.0 through 7.2.7, FortiMail 7.0.0 through 7.0.8, FortiNDR 7.6.0, FortiNDR 7.4.0 through 7.4.7, FortiNDR 7.2.0 through 7.2.4, FortiNDR 7.0.0 through 7.0.6, FortiRecorder 7.2.0 through 7.2.3, FortiRecorder 7.0.0 through 7.0.5, FortiRecorder 6.4.0 through 6.4.5, FortiVoice 7.2.0, FortiVoice 7.0.0 through 7.0.6, FortiVoice 6.4.0 through 6.4.10 allows a remote unauthenticated attacker to execute arbitrary code or commands via sending HTTP requests with specially crafted hash cookie.

## Affected products (CVE record)

- Fortinet FortiNDR: 7.6.0, 7.4.0 <= 7.4.7, 7.2.0 <= 7.2.4, 7.1.0 <= 7.1.1, 7.0.0 <= 7.0.6, 1.5.0 <= 1.5.3, 1.4.0, 1.3.0 <= 1.3.1, 1.2.0, 1.1.0
- Fortinet FortiCamera: 2.1.0 <= 2.1.3, 2.0.0, 1.1.0 <= 1.1.5
- Fortinet FortiRecorder: 7.2.0 <= 7.2.3, 7.0.0 <= 7.0.5, 6.4.0 <= 6.4.5
- Fortinet FortiVoice: 7.2.0, 7.0.0 <= 7.0.6, 6.4.0 <= 6.4.10
- Fortinet FortiMail: 7.6.0 <= 7.6.2, 7.4.0 <= 7.4.4, 7.2.0 <= 7.2.7, 7.0.0 <= 7.0.8

## Severity

- fortinet CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:C`

## Exploitation

- CISA KEV: added 2025-05-14; federal due date 2025-06-04. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 30.94% probability of exploitation activity in the next 30 days; percentile 98.

## Sources

- [Listed in CISA KEV notes (fortiguard.fortinet.com)](https://fortiguard.fortinet.com/psirt/FG-IR-25-254)
- [CVE.org record CVE-2025-32756](https://www.cve.org/CVERecord?id=CVE-2025-32756)
- [NVD entry CVE-2025-32756](https://nvd.nist.gov/vuln/detail/CVE-2025-32756)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32756)

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Source page: https://erroneo.us/security/cve/CVE-2025-32756/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt