Back to the results

Vulnerabilities

CriticalKEV

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

In brief

Severity · CVSS: Critical9.8CVSS 3.1, Critical
EPSS: 30%
CISA KEV: Known exploited, listed since 14 May 2025
CERT-FR: CERTFR-2025-ALE-006 CERTFR-2025-AVI-0399
Vendor: Fortinet
Published · Modified: 13 May 2025 · 17 Jun 2026
Last verified: 1 Oct 2026 at 09:32 UTC

Summary

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.

Weakness: CWE-121, CWE-787

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

15 branches with a published fixed release · 2 branches to migrate · 6 branches without a precise fixed release

Fortinet FortiNDR

Source: FG-IR-25-254CVE-2025-32756

7.6
Affected versions7.6.0
First fixed release7.6.1
7.4
Affected versions7.4.0 – 7.4.7
First fixed release7.4.8
7.2
Affected versions7.2.0 – 7.2.4
First fixed release7.2.5
7.1
Affected versions7.1.0 – 7.1.1
First fixed releaseNot published in the sources followed
7.0
Affected versions7.0.0 – 7.0.6
First fixed release7.0.7
1.5
Affected versions1.5.0 – 1.5.3
First fixed releaseNot published in the sources followed
1.4
Affected versions1.4.0
First fixed releaseNot published in the sources followed
1.3
Affected versions1.3.0 – 1.3.1
First fixed releaseNot published in the sources followed
1.2
Affected versions1.2.0
First fixed releaseNot published in the sources followed
1.1
Affected versions1.1.0
First fixed releaseNot published in the sources followed

Releases the vendor does not list are not affected.

Fortinet FortiCamera

Source: FG-IR-25-254CVE-2025-32756

2.1
Affected versions2.1.0 – 2.1.3
First fixed release2.1.4
2.0
Affected versions2.0.0
First fixed releaseMigration to a fixed release required
1.1
Affected versions1.1.0 – 1.1.5
First fixed releaseMigration to a fixed release required

Releases the vendor does not list are not affected.

Fortinet FortiRecorder

Source: FG-IR-25-254CVE-2025-32756

7.2
Affected versions7.2.0 – 7.2.3
First fixed release7.2.4
7.0
Affected versions7.0.0 – 7.0.5
First fixed release7.0.6
6.4
Affected versions6.4.0 – 6.4.5
First fixed release6.4.6

Releases the vendor does not list are not affected.

Fortinet FortiVoice

Source: FG-IR-25-254CVE-2025-32756

7.2
Affected versions7.2.0
First fixed release7.2.1
7.0
Affected versions7.0.0 – 7.0.6
First fixed release7.0.7
6.4
Affected versions6.4.0 – 6.4.10
First fixed release6.4.11

Releases the vendor does not list are not affected.

Fortinet FortiMail

Source: FG-IR-25-254CVE-2025-32756

7.6
Affected versions7.6.0 – 7.6.2
First fixed release7.6.3
7.4
Affected versions7.4.0 – 7.4.4
First fixed release7.4.5
7.2
Affected versions7.2.0 – 7.2.7
First fixed release7.2.8
7.0
Affected versions7.0.0 – 7.0.8
First fixed release7.0.9

Releases the vendor does not list are not affected.

Remediation

Fix available

Vendor fix

FortiNDR 7.67.6.1
FortiNDR 7.47.4.8
FortiNDR 7.27.2.5
FortiNDR 7.07.0.7
FortiCamera 2.12.1.4
FortiRecorder 7.27.2.4
FortiRecorder 7.07.0.6
FortiRecorder 6.46.4.6
FortiVoice 7.27.2.1
FortiVoice 7.07.0.7
FortiVoice 6.46.4.11
FortiMail 7.67.6.3
FortiMail 7.47.4.5
FortiMail 7.27.2.8
FortiMail 7.07.0.9

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

Branches without a fix of their own: migrate to a fixed release

FortiCamera 2.0
FortiCamera 1.1

Upgrade to FortiNDR version 7.6.1 or above Upgrade to FortiNDR version 7.4.8 or above Upgrade to FortiNDR version 7.2.5 or above Upgrade to FortiNDR version 7.0.7 or above Upgrade to FortiCamera version 2.1.4 or above Upgrade to FortiRecorder version 7.2.4 or above Upgrade to FortiRecorder version 7.0.6 or above

Full text

Upgrade to FortiRecorder version 6.4.6 or above Upgrade to FortiVoice version 7.2.1 or above Upgrade to FortiVoice version 7.0.7 or above Upgrade to FortiVoice version 6.4.11 or above Upgrade to FortiMail version 7.6.3 or above Upgrade to FortiMail version 7.4.5 or above Upgrade to FortiMail version 7.2.8 or above Upgrade to FortiMail version 7.0.9 or above

SourceFortinet (CVE record)

SourceFortiGuard FG-IR-25-254

CISA KEV 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 due date: 4 Jun 2025

CERT-FR recommendation

CERT-FR recommends applying the patches as soon as possible; refer to the vendor's security bulletin to obtain the patches (see Documentation section). If this is not possible, the vendor recommends disabling the management interface. CERT-FR reminds that exposing a management interface on the Internet is contrary to best practices.

SourceCERTFR-2025-ALE-006

CERT-FR recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

SourceCERTFR-2025-AVI-0399

Last verified 1 Oct 2026 at 09:32 UTC

Known exploitation

Added to CISA KEV on 14 May 2025

Federal remediation due date: 4 Jun 2025

The CISA required action is shown under Remediation.

30% probability of exploitation in the next 30 days (percentile 98%).

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

CERT-FR

2 documents of the French national CERT (ANSSI) reference this CVE.

Alert (ALE)CERTFR-2025-ALE-006Published 13 May 2025 · updated 24 Jun 2025 · closed 24 Jun 2025

Vulnerability in Fortinet products

Remote arbitrary code execution

Summary

On 13 May 2025, Fortinet published a security advisory regarding vulnerability CVE-2025-32756. This allows an unauthenticated attacker to perform remote arbitrary code execution. The vendor indicates that this vulnerability is being actively exploited. The observed exploitations to date affect FortiVoice products. Fortinet also provides indicators of compromise to look for.

Recommendation

CERT-FR recommends applying the patches as soon as possible; refer to the vendor's security bulletin to obtain the patches (see Documentation section). If this is not possible, the vendor recommends disabling the management interface. CERT-FR reminds that exposing a management interface on the Internet is contrary to best practices.

Official document on cert.ssi.gouv.frread by Patcharo 28 Sept 2026 at 20:03 UTCMachine translation of the French text published by CERT-FR; a text whose translation did not pass Patcharo's checks stays in French. Identifiers, versions and links are copied unchanged.

Advisory (AVI)CERTFR-2025-AVI-0399Published 13 May 2025

Multiple vulnerabilities in Fortinet products

Remote denial of serviceRemote arbitrary code executionData integrity breachSecurity policy bypassData confidentiality breachPrivilege escalation

Summary

Multiple vulnerabilities have been discovered in Fortinet products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service. Fortinet indicates that the CVE-2025-32756 vulnerability is actively exploited.

Recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

Official document on cert.ssi.gouv.frread by Patcharo 28 Sept 2026 at 20:04 UTCMachine translation of the French text published by CERT-FR; a text whose translation did not pass Patcharo's checks stays in French. Identifiers, versions and links are copied unchanged.

Timeline

13 May 2025Published by the source
14 May 2025Added to CISA KEV
4 Jun 2025CISA remediation due date
17 Jun 2026Source record last modified
29 Sept 2026EPSS score computed
1 Oct 2026Last verified by Patcharo

Official sources

Fortinet (CVE record)retrieved 1 Oct 2026 at 09:32 UTC
CISA Known Exploited Vulnerabilitiesretrieved 1 Oct 2026 at 09:28 UTC
NVDretrieved 27 Sept 2026 at 23:44 UTC
FIRST EPSSretrieved 30 Sept 2026 at 00:17 UTC
FortiGuard FG-IR-25-254retrieved 1 Oct 2026 at 09:32 UTC

References

Fortinet · CISA Known Exploited Vulnerabilities · NVD · FIRST EPSS · FortiGuard FG-IR-25-254

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodology Read the guide: FortiOS version numbering: branches, patch releases and the Feature and Mature labels