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TI-2021-08047 Aliases CVE-2021-26096GHSA-w667-46wg-c64r

Out-of-bounds write in Fortinet FortiSandbox

Priority LOW 39CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Multiple instances of heap-based buffer overflow in the command shell of FortiSandbox before 4.0.0 may allow an authenticated attacker to manipulate memory and alter its content by means of specifically crafted command line arguments.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00768 55th 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
Partial

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 FortiSandboxFortiSandbox before 4.0.0—No fix listedCNA
  • Fortinet FortiSandbox VendorFortinet Affected FortiSandbox before 4.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*up to 3.1.4; 3.2.0 to before 3.2.3VulnerableFortinet
  • cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:* Versions up to 3.1.4; 3.2.0 to before 3.2.3 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26096
  2. 2026-10-03 Alias added: GHSA-w667-46wg-c64r

References

Advisory 1

  • TI-2026-28691 OS command injection in Fortinet FortiSandbox KEVCVSS 3.1CRITICAL 9.1
  • TI-2026-20264 OS command injection in Fortinet FortiSandbox KEVCVSS 3.1CRITICAL 9.1
  • TI-2024-15689 Path traversal in Fortinet FortiSandbox CVSS 3.1HIGH 8.1
  • TI-2026-28696 Path traversal in Fortinet FortiSandbox CVSS 3.1CRITICAL 9.1
  • TI-2024-18399 Cross-site scripting in Fortinet FortiSandbox CVSS 3.1CRITICAL 9.0
  • TI-2025-33814 OS command injection in Fortinet FortiSandbox CVSS 3.1HIGH 8.8
See all 59 →

Sources

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