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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.

References

https://www.bitsight.com/blog/rondodox-botnet-infrastructure-analysis

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-2026-35616-fortinet-forticlientems-improper-access-control-vulnerability-exploited-in-the

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: 0.31974

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