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TI-2023-21504 Aliases CVE-2023-40720GHSA-wr9w-6wcp-7m3p

Authorization bypass in Fortinet FortiVoice

Priority LOW 33CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-639.

Summary

An authorization bypass through user-controlled key vulnerability [CWE-639] in FortiVoiceEntreprise version 7.0.0 through 7.0.1 and before 6.4.8 allows an authenticated attacker to read the SIP configuration of other users via crafted HTTP or HTTPS requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00848 58th 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
FortinetFortiVoice7.0.0 – 7.0.1; 6.4.0 – 6.4.8; 6.0.0 – 6.0.12—No fix listedCNA
  • FortiVoice VendorFortinet Affected 7.0.0 – 7.0.1; 6.4.0 – 6.4.8; 6.0.0 – 6.0.12 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortivoice:*:*:*:*:*:*:*:*6.0.0 – 6.0.12; 6.4.0 – 6.4.8VulnerableFortinet
cpe:2.3:a:fortinet:fortivoice:7.0.0:*:*:*:*:*:*:*7.0.0VulnerableFortinet
cpe:2.3:a:fortinet:fortivoice:7.0.1:*:*:*:*:*:*:*7.0.1VulnerableFortinet
  • cpe:2.3:a:fortinet:fortivoice:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.12; 6.4.0 – 6.4.8 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortivoice:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortivoice:7.0.1:*:*:*:*:*:*:* Versions 7.0.1 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-40720
  2. 2026-10-03 Alias added: GHSA-wr9w-6wcp-7m3p

References

Advisory 1

  • TI-2025-23811 Stack-based buffer overflow in Fortinet FortiNDR KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-07433 Improper authentication in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
  • TI-2024-32582 Path traversal in Fortinet FortiOS CVSS 3.1CRITICAL 9.1
  • TI-2024-32583 Path traversal in Fortinet FortiVoice CVSS 3.1CRITICAL 9.1
  • TI-2023-19364 SQL injection in Fortinet FortiVoice CVSS 3.1HIGH 8.6
  • TI-2022-10503 Cross-site request forgery in Fortinet FortiVoice CVSS 3.1HIGH 8.8
See all 23 →

Sources

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