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TI-2021-17885 Aliases CVE-2021-41021GHSA-9983-gjwx-g47w

A privilege escalation vulnerability in FortiNAC versions 8.8.8 and below and 9.1.2 and…

Priority LOW 36Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A privilege escalation vulnerability in FortiNAC versions 8.8.8 and below and 9.1.2 and below may allow an admin user to escalate the privileges to root via the sudo command.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th 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

VendorProductAffected versionsFixed inStatusSource
FortinetFortinet FortiNACFortiNAC 9.1.2, 9.1.1, 9.1.0, 8.8.8, 8.8.7, 8.8.6, 8.8.5, 8.8.4, 8.8.3, 8.8.2, 8.8.1, 8.8.0—No fix listedCNA
  • Fortinet FortiNAC VendorFortinet Affected FortiNAC 9.1.2, 9.1.1, 9.1.0, 8.8.8, 8.8.7, 8.8.6, 8.8.5, 8.8.4, 8.8.3, 8.8.2, 8.8.1, 8.8.0 Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortinac:8.8.0:*:*:*:*:*:*:*8.8.0VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.1:*:*:*:*:*:*:*8.8.1VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.2:*:*:*:*:*:*:*8.8.2VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.3:*:*:*:*:*:*:*8.8.3VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.4:*:*:*:*:*:*:*8.8.4VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.5:*:*:*:*:*:*:*8.8.5VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.6:*:*:*:*:*:*:*8.8.6VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.7:*:*:*:*:*:*:*8.8.7VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:8.8.8:*:*:*:*:*:*:*8.8.8VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:9.1.0:*:*:*:*:*:*:*9.1.0VulnerableFortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.0:*:*:*:*:*:*:* Versions 8.8.0 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.1:*:*:*:*:*:*:* Versions 8.8.1 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.2:*:*:*:*:*:*:* Versions 8.8.2 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.3:*:*:*:*:*:*:* Versions 8.8.3 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.4:*:*:*:*:*:*:* Versions 8.8.4 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.5:*:*:*:*:*:*:* Versions 8.8.5 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.6:*:*:*:*:*:*:* Versions 8.8.6 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.7:*:*:*:*:*:*:* Versions 8.8.7 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:8.8.8:*:*:*:*:*:*:* Versions 8.8.8 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:9.1.0:*:*:*:*:*:*:* Versions 9.1.0 Vulnerable ·Fortinet
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortinac:9.1.1:*:*:*:*:*:*:*9.1.1VulnerableFortinet
cpe:2.3:a:fortinet:fortinac:9.1.2:*:*:*:*:*:*:*9.1.2VulnerableFortinet
  • cpe:2.3:a:fortinet:fortinac:9.1.1:*:*:*:*:*:*:* Versions 9.1.1 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac:9.1.2:*:*:*:*:*:*:* Versions 9.1.2 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41021
  2. 2026-10-03 Alias added: GHSA-9983-gjwx-g47w

References

Patch 1

  • TI-2022-18918 Exposure of resource to wrong sphere in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2023-16458 Deserialization of untrusted data in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2022-18002 Improper authorization in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2022-18920 XML external entity injection in Fortinet FortiNAC CVSS 3.1CRITICAL 9.1
  • TI-2024-20852 Cross-site scripting in Fortinet FortiNAC CVSS 3.1CRITICAL 9.0
  • TI-2023-16459 Command injection in Fortinet FortiNAC CVSS 3.1MEDIUM 4.8
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences