What is the CVSS score of CVE-2025-46776?

CVE-2025-46776 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Fortiextender Firmware are affected by CVE-2025-46776?

Organizations using Fortinet FortiExtender 7.6.0 should be aware of moderate risk from CVE-2025-46776, a buffer overflow vulnerability rated CVSS 6.4.

How to fix or mitigate CVE-2025-46776?

Within 30 days: Identify affected systems running Fortinet FortiExtender 7.6.0 and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Fortiextender Firmware CVE-2025-46776

MEDIUM

Classic Buffer Overflow (CWE-120)

2025-11-18 psirt@fortinet.com

RCE Buffer Overflow Fortinet Fortiextender Firmware

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

CVE Published

Nov 18, 2025 - 17:16 nvd

MEDIUM 6.4

DescriptionCVE.org

A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiExtender 7.6.0 through 7.6.1, FortiExtender 7.4.0 through 7.4.6, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated user to execute arbitrary code or commands via crafted CLI commands.

AnalysisAI

A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiExtender 7.6.0 through 7.6.1, FortiExtender 7.4.0 through 7.4.6, FortiExtender 7.2 all. Rated medium severity (CVSS 6.4). No vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiExtender 7.6.0 through 7.6.1, FortiExtender 7.4.0 through 7.4.6, FortiExtender 7.2 all versions, FortiExtender 7.0 all versions may allow an authenticated user to execute arbitrary code or commands via crafted CLI commands. Affected products include: Fortinet Fortiextender Firmware. Version information: through 7.6.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.