Vulnerability Monitor

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CVE-2021-42755


An integer overflow / wraparound vulnerability [CWE-190] in FortiSwitch 7.0.2 and below, 6.4.9 and below, 6.2.x, 6.0.x; FortiRecorder 6.4.2 and below, 6.0.10 and below; FortiOS 7.0.2 and below, 6.4.8 and below, 6.2.10 and below, 6.0.x; FortiProxy 7.0.0, 2.0.6 and below, 1.2.x, 1.1.x, 1.0.x; FortiVoiceEnterprise 6.4.3 and below, 6.0.10 and below dhcpd daemon may allow an unauthenticated and network adjacent attacker to crash the dhcpd deamon, resulting in potential denial of service.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.3, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 5 products from fortinet, from fortinet, from fortinet and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2022-07-18T17:15:08.413

Last Modified

2024-11-21T06:28:06.293

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.3 (MEDIUM)

Weaknesses
  • Type: Primary
    CWE-190

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application fortinet fortiproxy ≤ 1.0.7 Yes
Application fortinet fortiproxy ≤ 1.1.6 Yes
Application fortinet fortiproxy ≤ 1.2.13 Yes
Application fortinet fortiproxy ≤ 2.0.6 Yes
Application fortinet fortiproxy 7.0.0 Yes
Application fortinet fortivoice 5.3.0 Yes
Application fortinet fortivoice 5.3.1 Yes
Application fortinet fortivoice 5.3.2 Yes
Application fortinet fortivoice 5.3.3 Yes
Application fortinet fortivoice 5.3.4 Yes
Application fortinet fortivoice 5.3.5 Yes
Application fortinet fortivoice 5.3.6 Yes
Application fortinet fortivoice 5.3.7 Yes
Application fortinet fortivoice 5.3.8 Yes
Application fortinet fortivoice 5.3.10 Yes
Application fortinet fortivoice 5.3.11 Yes
Application fortinet fortivoice 5.3.12 Yes
Application fortinet fortivoice 5.3.13 Yes
Application fortinet fortivoice 5.3.14 Yes
Application fortinet fortivoice 5.3.15 Yes
Application fortinet fortivoice 5.3.16 Yes
Application fortinet fortivoice 5.3.17 Yes
Application fortinet fortivoice 5.3.18 Yes
Application fortinet fortivoice 5.3.19 Yes
Application fortinet fortivoice 5.3.20 Yes
Application fortinet fortivoice 5.3.21 Yes
Application fortinet fortivoice 5.3.22 Yes
Application fortinet fortivoice 5.3.23 Yes
Application fortinet fortivoice 5.3.24 Yes
Application fortinet fortivoice 5.3.25 Yes
Application fortinet fortivoice 5.3.26 Yes
Application fortinet fortivoice 6.0.0 Yes
Application fortinet fortivoice 6.0.1 Yes
Application fortinet fortivoice 6.0.2 Yes
Application fortinet fortivoice 6.0.3 Yes
Application fortinet fortivoice 6.0.4 Yes
Application fortinet fortivoice 6.0.5 Yes
Application fortinet fortivoice 6.0.6 Yes
Application fortinet fortivoice 6.0.7 Yes
Application fortinet fortivoice 6.0.8 Yes
Application fortinet fortivoice 6.0.9 Yes
Application fortinet fortivoice 6.0.10 Yes
Application fortinet fortivoice 6.4.0 Yes
Application fortinet fortivoice 6.4.1 Yes
Application fortinet fortivoice 6.4.2 Yes
Application fortinet fortivoice 6.4.3 Yes
Operating System fortinet fortios 5.4.0 Yes
Operating System fortinet fortios 5.4.1 Yes
Operating System fortinet fortios 5.4.2 Yes
Operating System fortinet fortios 5.4.3 Yes
Operating System fortinet fortios 5.4.4 Yes
Operating System fortinet fortios 5.4.5 Yes
Operating System fortinet fortios 5.4.6 Yes
Operating System fortinet fortios 5.4.7 Yes
Operating System fortinet fortios 5.4.8 Yes
Operating System fortinet fortios 5.4.9 Yes
Operating System fortinet fortios 5.4.10 Yes
Operating System fortinet fortios 5.4.11 Yes
Operating System fortinet fortios 5.4.12 Yes
Operating System fortinet fortios 5.4.13 Yes
Operating System fortinet fortios 5.6.0 Yes
Operating System fortinet fortios 5.6.1 Yes
Operating System fortinet fortios 5.6.2 Yes
Operating System fortinet fortios 5.6.3 Yes
Operating System fortinet fortios 5.6.4 Yes
Operating System fortinet fortios 5.6.5 Yes
Operating System fortinet fortios 5.6.6 Yes
Operating System fortinet fortios 5.6.7 Yes
Operating System fortinet fortios 5.6.8 Yes
Operating System fortinet fortios 5.6.9 Yes
Operating System fortinet fortios 5.6.10 Yes
Operating System fortinet fortios 5.6.11 Yes
Operating System fortinet fortios 5.6.12 Yes
Operating System fortinet fortios 5.6.13 Yes
Operating System fortinet fortios 5.6.14 Yes
Operating System fortinet fortios 6.0.0 Yes
Operating System fortinet fortios 6.0.1 Yes
Operating System fortinet fortios 6.0.2 Yes
Operating System fortinet fortios 6.0.3 Yes
Operating System fortinet fortios 6.0.4 Yes
Operating System fortinet fortios 6.0.5 Yes
Operating System fortinet fortios 6.0.6 Yes
Operating System fortinet fortios 6.0.7 Yes
Operating System fortinet fortios 6.0.8 Yes
Operating System fortinet fortios 6.0.9 Yes
Operating System fortinet fortios 6.0.10 Yes
Operating System fortinet fortios 6.0.11 Yes
Operating System fortinet fortios 6.0.12 Yes
Operating System fortinet fortios 6.0.13 Yes
Operating System fortinet fortios 6.0.14 Yes
Operating System fortinet fortios 6.2.0 Yes
Operating System fortinet fortios 6.2.1 Yes
Operating System fortinet fortios 6.2.2 Yes
Operating System fortinet fortios 6.2.3 Yes
Operating System fortinet fortios 6.2.4 Yes
Operating System fortinet fortios 6.2.5 Yes
Operating System fortinet fortios 6.2.6 Yes
Operating System fortinet fortios 6.2.7 Yes
Operating System fortinet fortios 6.2.8 Yes
Operating System fortinet fortios 6.2.9 Yes
Operating System fortinet fortios 6.2.10 Yes
Operating System fortinet fortios 6.4.0 Yes
Operating System fortinet fortios 6.4.1 Yes
Operating System fortinet fortios 6.4.2 Yes
Operating System fortinet fortios 6.4.3 Yes
Operating System fortinet fortios 6.4.4 Yes
Operating System fortinet fortios 6.4.5 Yes
Operating System fortinet fortios 6.4.6 Yes
Operating System fortinet fortios 6.4.7 Yes
Operating System fortinet fortios 7.0.0 Yes
Operating System fortinet fortios 7.0.1 Yes
Operating System fortinet fortios 7.0.2 Yes
Operating System fortinet fortirecorder_firmware 6.0.0 Yes
Operating System fortinet fortirecorder_firmware 6.0.1 Yes
Operating System fortinet fortirecorder_firmware 6.0.2 Yes
Operating System fortinet fortirecorder_firmware 6.0.3 Yes
Operating System fortinet fortirecorder_firmware 6.0.4 Yes
Operating System fortinet fortirecorder_firmware 6.0.5 Yes
Operating System fortinet fortirecorder_firmware 6.0.6 Yes
Operating System fortinet fortirecorder_firmware 6.0.7 Yes
Operating System fortinet fortirecorder_firmware 6.0.8 Yes
Operating System fortinet fortirecorder_firmware 6.0.9 Yes
Operating System fortinet fortirecorder_firmware 6.0.10 Yes
Operating System fortinet fortirecorder_firmware 6.4.0 Yes
Operating System fortinet fortirecorder_firmware 6.4.1 Yes
Operating System fortinet fortirecorder_firmware 6.4.2 Yes
Operating System fortinet fortiswitch ≤ 6.0.7 Yes
Operating System fortinet fortiswitch ≤ 6.2.7 Yes
Operating System fortinet fortiswitch ≤ 6.4.9 Yes
Operating System fortinet fortiswitch ≤ 7.0.2 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For fortinet's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.