Cyber Resilience

CVE-2023-34992

CriticalRCE

Published: 10 October 2023

Published
10 October 2023
Modified
14 January 2026
KEV Added
Patch
CVSS Score v3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.7588 98.9th percentile
Risk Priority 66 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-34992 is a critical-severity OS Command Injection (CWE-78) vulnerability in Fortinet Fortisiem. Its CVSS base score is 10.0 (Critical).

Operationally, ranked in the top 1.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis

CVE-2023-34992 is an OS command injection vulnerability, tracked under CWE-78, that affects Fortinet products. The flaw stems from improper neutralization of special elements in OS commands and can be triggered through crafted API requests, enabling execution of unauthorized code or commands. It carries a maximum CVSS 3.1 score of 10.0 with a network attack vector, no required authentication or user interaction, and changed scope that yields full impacts on confidentiality, integrity, and availability.

An unauthenticated attacker with network access can send malicious API requests to exploit the injection and run arbitrary commands on the affected system, resulting in complete compromise of the target.

The referenced Fortinet advisory FG-IR-23-130 provides official guidance on the issue and associated remediation steps.

The EPSS score has reached a peak of 0.8189 with a current value of 0.7716, indicating substantial exploitation interest following disclosure.

EU & UK References

Vulnerability details

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet allows attacker to execute unauthorized code or commands via crafted API requests.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

fortinet
fortisiem
6.4.0, 6.4.1, 6.4.2, 6.5.0, 6.5.1 · 6.6.0 — 6.6.3 · 6.7.0 — 6.7.5

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References