Fortinet FortiSwitchAXFixed up to 1.0.1 LLDP Packet buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Fortinet FortiSwitchAXFixed up to 1.0.1. This vulnerability affects unknown code of the component LLDP Packet Handler. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2026-22627. The attack requires being on the local network. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Fortinet FortiSwitchAXFixed up to 1.0.1. This issue affects some unknown processing of the component LLDP Packet Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiSwitchAXFixed 1.0.0 through 1.0.1 may allow an unauthenticated attacker within the same adjacent network to execute unauthorized code or commands on the device via sending a crafted LLDP packet.

It is possible to read the advisory at fortiguard.fortinet.com. The identification of this vulnerability is CVE-2026-22627 since 01/08/2026. The exploitation is known to be easy. Access to the local network is required for this attack to succeed. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0683). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Fortinet FortiSwitch

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (fortinet): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/08/2026 CVE reserved
03/10/2026 +61 days Advisory disclosed
03/10/2026 +0 days VulDB entry created
03/13/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-26-086
Status: Confirmed

CVE: CVE-2026-22627 (🔒)
GCVE (CVE): GCVE-0-2026-22627
GCVE (VulDB): GCVE-100-350111
CERT Bund: WID-SEC-2026-0683 - Fortinet FortiSwitchAXFixed: Mehrere Schwachstellen ermöglichen Codeausführung

Entryinfo

Created: 03/10/2026 19:57
Updated: 03/13/2026 03:51
Changes: 03/10/2026 19:57 (64), 03/12/2026 06:17 (7), 03/13/2026 03:51 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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