CVE-2021-26106

⚠️ high

Summary

An improper neutralization of special elements used in an OS Command vulnerability in FortiAP's console 6.4.1 through 6.4.5 and 6.2.4 through 6.2.5 may allow an authenticated attacker to execute unauthorized commands by running the kdbg CLI command with specifically crafted arguments.

CVSS Score

7.8

High

EPSS Score

0.1

Exploit Probability

Published Date

2021-07-09

First Seen: 2026-01-05

📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 69.6% of all 328,009 vulnerabilities in our database.

#99,625

Above average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Oct 23, 2024

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2024-11-21

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-78

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
fortinet	fortiap-s	Affected	≥ 6.2.4 < 6.2.6
fortinet	fortiap-w2	Affected	≥ 6.2.4 < 6.2.6
fortinet	fortiap	Affected	≥ 6.4.1 < 6.4.6

🔗 References 1

https://fortiguard.com/advisory/FG-IR-20-210

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2025-53680	🔶 medium	6.7	0.0	An improper neutralization of special elements used in an OS command ("OS Command Injection") vulnerability [CWE-78] vul...	2026-05-12
CVE-2025-53870	🔶 medium	6.7	0.0	An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet ...	2026-05-12
CVE-2024-26012	🔶 medium	6.7	0.2	A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiAP-S 6.2 a...	2025-01-14
CVE-2023-25608	🔶 medium	5.5	0.2	An incomplete filtering of one or more instances of special elements vulnerability [CWE-792] in the command line interpr...	2023-09-13
CVE-2022-29058	⚠️ high	7.8	0.2	An improper neutralization of special elements [CWE-89] used in an OS command vulnerability [CWE-78] in the command line...	2022-09-06
CVE-2019-15709	🔶 medium	6.5	0.6	An improper input validation in FortiAP-S/W2 6.2.0 to 6.2.2, 6.0.5 and below, FortiAP-U 6.0.1 and below CLI admin consol...	2020-06-01

These CVEs affect the same products