The vulnerability of the Fortinet FortiClient Windows security tool, related to copying buffers without checking the size of the input data, allows attackers to modify or forge DNS responses for the target host and execute arbitrary code.
🗓️ 07 Sep 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 4 Views
| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | CVE-2026-70465 | 12 Aug 202611:52 | – | attackerkb |
 | CVE-2026-70465 | 13 Aug 202610:21 | – | circl |
 | CVE-2026-70465 | 12 Aug 202611:52 | – | cve |
 | CVE-2026-70465 | 12 Aug 202611:52 | – | cvelist |
 | EUVD-2026-57188 | 12 Aug 202611:52 | – | euvd |
 | Fortinet FortiClient Heap overflow in kernel driver due to missing size validation (FG-IR-26-156) | 17 Aug 202600:00 | – | nessus |
 | Vulnerabilities hidden in Fortinet FortiClient | 13 Aug 202613:03 | – | ncsc |
 | CVE-2026-70465 | 12 Aug 202612:19 | – | nvd |
 | PT-2026-71058 | 12 Aug 202600:00 | – | ptsecurity |
 | CVE-2026-70465 | 12 Aug 202611:52 | – | vulnrichment |
Node
OR
| Source | Link |
|---|---|
| fortiguard | www.fortiguard.fortinet.com/psirt/FG-IR-26-156 |
| web | www.web.nvd.nist.gov/view/vuln/detail |
| fortiguard | www.fortiguard.com/psirt/FG-IR-26-156 |
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
07 Sep 2026 00:00Current
6.8Medium risk
Vulners AI Score6.8
CVSS 27.6
CVSS 38.1
EPSS0.00667