Cyber Resilience

CVE-2021-41016

High

Published: 02 February 2022

Published
02 February 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0060 69.8th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-41016 is a high-severity OS Command Injection (CWE-78) vulnerability in Fortinet Fortiextender Firmware. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 30.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A improper neutralization of special elements used in a command ('command injection') in Fortinet FortiExtender version 7.0.1 and below, 4.2.3 and below, 4.1.7 and below allows an authenticated attacker to execute privileged shell commands via CLI commands including special characters

CWE(s)
CWE-78

Related Threats

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

Affected Assets

fortinet
fortiextender firmware
4.1.1 — 4.1.8 · 4.2.0 — 4.2.4 · 7.0.0 — 7.0.2

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.

SC-27 Platform-independent Applications
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.

SI-10 Information Input Validation
addresses: CWE-78

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

References