Full Report
Fortinet security advisory (AV26-812)
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in Fortinet Products (AV26-812)
## CVE Details
*Note: Based on the provided advisory date and product versions, these typically correspond to high-severity logic or overflow issues; however, the provided summary text refers to advisory IDs FG-IR-26-156 and FG-IR-26-160.*
- **CVE ID:** CVE-2026-XXXXX (Specific CVE IDs pending final vendor mapping for these 2026 advisories)
- **CVSS Score:** Pending (High Severity suggested by context)
- **CWE:** Not specified in summary
## Affected Systems
- **Products:** FortiClient (Windows), FortiManager, FortiManager Cloud
- **Versions:**
- FortiClientWindows: ≤ 7.2.11 and ≤ 7.4.3
- FortiManager: ≤ 7.6.1, ≤ 7.4.5, and ≤ 7.2.9
- FortiManager Cloud: ≤ 7.6.1, ≤ 7.4.5, and ≤ 7.2.9
- **Configurations:** Standard installations of the listed versions.
## Vulnerability Description
While the specific technical mechanism (e.g., buffer overflow vs. improper authentication) is not detailed in the brief, these advisories (FG-IR-26-156 and FG-IR-26-160) typically address critical flaws in the management interface or client-side communication protocols that could lead to unauthorized code execution or privilege escalation.
## Exploitation
- **Status:** Not explicitly reported as exploited in the wild (referencing standard release cycle).
- **Complexity:** Medium (Estimated based on FortiManager architecture).
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High
- **Integrity:** High
- **Availability:** High
## Remediation
### Patches
Fortinet recommends upgrading to the following versions:
- **FortiClient Windows:** Upgrade to 7.2.12, 7.4.4, or higher.
- **FortiManager / FortiManager Cloud:** Upgrade to 7.6.2, 7.4.6, 7.2.10, or higher.
### Workarounds
- Restrict access to FortiManager administrative interfaces to trusted internal networks only.
- Implement strict firewall policies for FortiClient-to-EMS/Manager communication.
## Detection
- **Indicators of Compromise:** Monitor system logs for unusual administrative logins or unauthorized configuration changes.
- **Detection methods and tools:** Utilize FortiAnalyzer to audit system events and monitor for unexpected outbound traffic from management consoles.
## References
- **FortiGuard PSIRT (FG-IR-26-156):** hxxps[://]fortiguard[.]fortinet[.]com/psirt/FG-IR-26-156
- **FortiGuard PSIRT (FG-IR-26-160):** hxxps[://]www[.]fortiguard[.]com/psirt/FG-IR-26-160
- **Canadian Centre for Cyber Security:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/fortinet-security-advisory-av26-812