CVE-2026-126223

EUVD-2026-123856

11.11.2026, 22:17

A stack-based buffer overflow vulnerability in Fortinet FortiAnalyzer 8.0.0 through 8.0.1, FortiAnalyzer 7.6.0 through 7.6.7, FortiAnalyzer 7.4.0 through 7.4.11, FortiAnalyzer Cloud 8.0.0 through 8.0.1, FortiAnalyzer Cloud 7.6.0 through 7.6.7, FortiAnalyzer Cloud 7.4.1 through 7.4.11, FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager Cloud 8.0.0 through 8.0.1, FortiManager Cloud 7.6.0 through 7.6.7, FortiManager Cloud 7.4.1 through 7.4.11 may allow an authenticated administrator to execute unauthorized code or commands or cause a denial of service via specially crafted JSON-RPC requests.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
fortinet	CNA	7.2 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).

Vendor	Product	Version	Source
fortinet	fortimanager	8.0.0 ≤ 𝑥 ≤ 8.0.1	CNA
fortinet	fortimanager	7.6.0 ≤ 𝑥 ≤ 7.6.7	CNA
fortinet	fortimanager	7.4.0 ≤ 𝑥 ≤ 7.4.11	CNA
fortinet	fortimanager	7.4.1 ≤ 𝑥 ≤ 7.4.11	CNA
fortinet	fortianalyzer	8.0.0 ≤ 𝑥 ≤ 8.0.1	CNA
fortinet	fortianalyzer	7.6.0 ≤ 𝑥 ≤ 7.6.7	CNA
fortinet	fortianalyzer	7.4.0 ≤ 𝑥 ≤ 7.4.11	CNA
fortinet	fortianalyzer	7.4.1 ≤ 𝑥 ≤ 7.4.11	CNA

Common Weakness Enumeration

CWE-121 - Stack-based Buffer Overflow
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-238