CVE-2025-32756

critical

Description

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.

From the Tenable Blog

CVE-2025-32756: Zero-Day Vulnerability in Multiple Fortinet Products Exploited in the Wild

Published: 2025-05-14

Fortinet has observed threat actors exploiting CVE-2025-32756, a critical zero-day arbitrary code execution vulnerability which affects multiple Fortinet products including FortiVoice, FortiMail, FortiNDR, FortiRecorder and FortiCamera.

References

https://www.darkreading.com/cyberattacks-data-breaches/fortinet-products-in-crosshairs-again

https://hackread.com/researchers-poc-fortinet-cve-2025-32756-quick-patch/

https://horizon3.ai/attack-research/attack-blogs/cve-2025-32756-low-rise-jeans-are-back-and-so-are-buffer-overflows/

https://securityaffairs.com/177862/hacking/u-s-cisa-adds-a-fortinet-flaw-to-its-known-exploited-vulnerabilities-catalog.html

https://www.securityweek.com/fortinet-patches-zero-day-exploited-against-fortivoice-appliances/

https://www.infosecurity-magazine.com/news/fortinet-ivanti-zero-days/

https://thehackernews.com/2025/05/fortinet-patches-cve-2025-32756-zero.html

https://securityaffairs.com/177800/security/fortinet-fixed-actively-exploited-fortivoice-zero-day.html

https://www.helpnetsecurity.com/2025/05/13/zero-day-exploited-to-compromise-fortinet-fortivoice-systems-cve-2025-32756/

https://www.bleepingcomputer.com/news/security/fortinet-fixes-critical-zero-day-exploited-in-fortivoice-attacks/

https://fortiguard.fortinet.com/psirt/FG-IR-25-254

https://www.tenable.com/blog/cve-2025-64155-exploit-code-released-for-critical-fortinet-fortisiem-command-injection

https://www.tenable.com/blog/cve-2025-64446-fortinet-fortiweb-zero-day-path-traversal-vulnerability-exploited-in-the-wild

https://www.tenable.com/blog/cve-2025-25256-proof-of-concept-released-for-critical-fortinet-fortisiem-command-injection

https://www.tenable.com/blog/cve-2025-32756-zero-day-vulnerability-in-multiple-fortinet-products-exploited-in-the-wild

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32756

Details

Source: Mitre, NVD

Published: 2025-05-13

Updated: 2026-01-14

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.25651

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest

Detections

Analytics