Security Vulnerability CVE-2025-32756 - Complete Analysis and Details
Red Hot Cyber
Cybersecurity is about sharing. Recognize the risk, combat it, share your experiences, and encourage others to do better than you.
Search
Fortinet 320x100px
Banner Desktop

CVE-2025-32756

View the latest critical CVEs issued
This is a free service offered by Red Hot Cyber to the community. It allows you to view, on a single page, information about a single CVE from the National Vulnerability Database (NVD) and the National Institute of Standards and Technology (NIST) of the United States of America, the Forum of Incident Response and Security Teams (FIRST) regarding the EPSS score and percentile, data from the KEV catalog of the Cybersecurity and Infrastructure Security Agency (CISA), as well as selected resources from Red Hot Cyber and other international sources.

National Vulnerability Database Information

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

CVSS Base Score: 9.8 (v3.1)

The **CVSS Base Score** is a score from **0 to 10** that represents the intrinsic severity of a vulnerability. A higher score indicates greater severity.

Value
0.02.55.07.510.0
Published on: 05/13/2025 15:15:57
Last modified: 10/24/2025 12:53:20
NIST: CVE source from the National Vulnerability Database (NVD)

CVSS Metrics Details

  • Base Severity: CRITICAL
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

Common Weakness Enumeration (CWE)

Database CWE: v4.18

CWE-121: Stack-based Buffer Overflow ↗

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

CWE-787: Out-of-bounds Write ↗

The product writes data past the end, or before the beginning, of the intended buffer.

Fonte: MITRE CWE


FIRST Information

EPSS Score: 0.2058

The **EPSS (Exploit Prediction Scoring System)** is a score from **0 to 1** that indicates the **probability** that a vulnerability will be exploited in the real world in the next 30 days. A higher value indicates a greater likelihood of exploitation.

Value
0.00.250.50.751.0

Percentile: 0.9537

The **Percentile** indicates how much higher this vulnerability's EPSS score is compared to all other vulnerabilities in the EPSS database. For example, a percentile of 0.90 (90%) means that 90% of vulnerabilities have an EPSS score equal to or lower than the current one.

Value
0.00.250.50.751.0

*Data updated as of: 2025-12-15


CISA Information (Known Exploited Vulnerabilities)

The **CISA KEV Catalog** lists vulnerabilities that have been **actively exploited in the real world**. If a CVE is present in this catalog, it indicates that the threat is immediate and mitigation should be a top priority.

CVE **CVE-2025-32756** **IS PRESENT** in the CISA KEV Catalog!

  • Vulnerability Name: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability
  • Short Description: Fortinet FortiFone, FortiVoice, FortiNDR and FortiMail contain a stack-based overflow vulnerability that may allow a remote unauthenticated attacker to execute arbitrary code or commands via crafted HTTP requests.
  • Date Added to KEV: 05/14/2025
  • Vendor/Product: Fortinet / Multiple Products
  • 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.
  • Due Date: 06/04/2025

Articles published on Red Hot Cyber


NVD References

Exploit PoC from GitHub