CVE-2021-41016: fortinet fortiextender_firmware OS Command Injection
CVSS: 9.0v2.0HighModified
Published 02-02-2022Last modified 25-10-2024
Vulnerability summary
CVE-2021-41016 is a high (CVSS 9.0) OS Command Injection vulnerability in fortinet fortiextender_firmware. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 63.9% of scored vulnerabilities.
CVSS score
9.0/10
010
High · v2.0 (NVD)EPSS score
1.05%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 02-02-2022PublishedVulnerability first disclosed.
- 25-10-2024Last modifiedVulnerability information updated.
Description
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
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:CSources2 sources · 7.8–8.8
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
High 9.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
1.05%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.05% on 20-09-2026
20-09-202620-10-2026
EPSS score1.05%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Fortinet1 product
- fortiextender_firmware≥ 4.1.1, < 4.1.8 | ≥ 4.2.0, < 4.2.4 | ≥ 7.0.0, < 7.0.2
1 vendor · 1 product