Improper access control in Fortinet FortiWLC
Priority LOW 30CWE-284Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
A use of hard-coded password vulnerability in FortiWLC version 8.5.2 and below, version 8.4.8 and below, version 8.3.3 to 8.3.2, version 8.2.7 to 8.2.6 may allow a local, authenticated attacker to connect to the managed Access Point (Meru AP and FortiAP-U) as root using the default hard-coded username and password.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00161 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | FortiWLC | 8.5.0 – 8.5.2; 8.4.4 – 8.4.8; 8.4.0 – 8.4.2; 8.3.2 – 8.3.3; 8.2.6 – 8.2.7 | — | No fix listed | CNA |
- FortiWLC VendorFortinet Affected 8.5.0 – 8.5.2; 8.4.4 – 8.4.8; 8.4.0 – 8.4.2; 8.3.2 – 8.3.3; 8.2.6 – 8.2.7 Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:fortiwlc:*:*:*:*:*:*:*:* | 8.4.0 to before 8.5.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiwlc:8.2.6:*:*:*:*:*:*:* | 8.2.6 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiwlc:8.2.7:*:*:*:*:*:*:* | 8.2.7 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiwlc:8.3.2:*:*:*:*:*:*:* | 8.3.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:fortiwlc:8.3.3:*:*:*:*:*:*:* | 8.3.3 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:fortiwlc:*:*:*:*:*:*:*:* Versions 8.4.0 to before 8.5.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiwlc:8.2.6:*:*:*:*:*:*:* Versions 8.2.6 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiwlc:8.2.7:*:*:*:*:*:*:* Versions 8.2.7 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiwlc:8.3.2:*:*:*:*:*:*:* Versions 8.3.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:fortiwlc:8.3.3:*:*:*:*:*:*:* Versions 8.3.3 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22126
- 2026-10-03 Alias added: GHSA-6qvm-8hqf-vwf3
References
More Fortinet Fortiwlc vulnerabilities
- TI-2017-12817 Hard-coded credentials in Fortinet FortiWLC CVSS 3.0CRITICAL 9.8
- TI-2017-12816 Hard-coded credentials in Fortinet FortiWLC CVSS 3.0CRITICAL 9.8
- TI-2016-06996 Hard-coded credentials in Fortinet FortiWLC CVSS 3.0CRITICAL 9.1
- TI-2016-06425 The rsyncd server in Fortinet FortiWLC 6.1-2-29 and earlier, 7.0-9-1, 7.0-10-0, 8.0-5-0… CVSS 3.0CRITICAL 9.8
- TI-2021-18962 Incorrect authorization in Fortinet FortiWLC CVSS 3.1HIGH 8.8
- TI-2017-05004 An OS Command Injection vulnerability in Fortinet FortiWLC 6.1-2 through 6.1-5, 7.0-7… CVSS 3.0HIGH 7.2
Sources
- CVE-2021-22126 · CVE Program
- CVE-2021-22126 · NVD
- FIRST EPSS
- GHSA-6qvm-8hqf-vwf3 · GitHub Advisory Database · CC BY 4.0
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