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TI-2021-19868 Aliases CVE-2021-44170GHSA-h85f-qmh7-qh6m

Out-of-bounds write in Fortinet FortiProxy, FortiOS

Priority LOW 31CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
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-787 and the CVSS impact.

Summary

A stack-based buffer overflow vulnerability [CWE-121] in the command line interpreter of FortiOS before 7.0.4 and FortiProxy before 2.0.8 may allow an authenticated attacker to execute unauthorized code or commands via specially crafted command line arguments.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00206 10th 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 FortiProxy, FortiOSFortiOS before 7.0.4; FortiProxy before 2.0.8—No fix listedCNA
  • Fortinet FortiProxy, FortiOS VendorFortinet Affected FortiOS before 7.0.4; FortiProxy before 2.0.8 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*1.0.0 – 1.0.7; 1.1.0 – 1.1.6; 1.2.0 – 1.2.13; 2.0.0 to before 2.0.8VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*6.0.0 – 6.0.14; 6.2.0 to before 6.2.11; 6.4.0 to before 6.4.9; 7.0.0 – 7.0.2VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 1.0.0 – 1.0.7; 1.1.0 – 1.1.6; 1.2.0 – 1.2.13; 2.0.0 to before 2.0.8 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.14; 6.2.0 to before 6.2.11; 6.4.0 to before 6.4.9; 7.0.0 – 7.0.2 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-44170
  2. 2026-10-03 Alias added: GHSA-h85f-qmh7-qh6m

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-36904 Authentication bypass in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K KEVCVSS 3.1CRITICAL 9.8
See all 276 →

Sources

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