Read the docs
TI-2023-16464 Aliases CVE-2023-33305GHSA-vrv2-gjv8-mw36

Infinite loop in Fortinet FortiWeb

Priority LOW 30CWE-835Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-835.

Summary

A loop with unreachable exit condition ('infinite loop') in Fortinet FortiOS version 7.2.0 through 7.2.4, FortiOS version 7.0.0 through 7.0.10, FortiOS 6.4 all versions, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy version 7.2.0 through 7.2.3, FortiProxy version 7.0.0 through 7.0.9, FortiProxy 2.0 all versions, FortiProxy 1.2 all versions, FortiProxy 1.1 all versions, FortiProxy 1.0 all versions, FortiWeb version 7.2.0 through 7.2.1, FortiWeb version 7.0.0 through 7.0.6, FortiWeb 6.4 all versions, FortiWeb 6.3 all versions allows attacker to perform a denial of service via specially crafted HTTP requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00827 57th 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
FortinetFortiWeb7.2.0 – 7.2.1; 7.0.0 – 7.0.6; 6.4.0 – 6.4.3; 6.3.0 – 6.3.23—No fix listedCNA
FortinetFortiOS7.2.0 – 7.2.4; 7.0.0 – 7.0.10; 6.4.0 – 6.4.13; 6.2.0 – 6.2.15; 6.0.0 – 6.0.17; 5.6.0 – 5.6.14; 5.4.0 – 5.4.13; 5.2.0 – 5.2.15; 5.0.0 – 5.0.14—No fix listedCNA
FortinetFortiProxy7.2.0 – 7.2.3; 7.0.0 – 7.0.9; 2.0.0 – 2.0.12; 1.2.0 – 1.2.13; 1.1.0 – 1.1.6; 1.0.0 – 1.0.7—No fix listedCNA
  • FortiWeb VendorFortinet Affected 7.2.0 – 7.2.1; 7.0.0 – 7.0.6; 6.4.0 – 6.4.3; 6.3.0 – 6.3.23 Fixed in — No fix listed CNA
  • FortiOS VendorFortinet Affected 7.2.0 – 7.2.4; 7.0.0 – 7.0.10; 6.4.0 – 6.4.13; 6.2.0 – 6.2.15; 6.0.0 – 6.0.17; 5.6.0 – 5.6.14; 5.4.0 – 5.4.13; 5.2.0 – 5.2.15; 5.0.0 – 5.0.14 Fixed in — No fix listed CNA
  • FortiProxy VendorFortinet Affected 7.2.0 – 7.2.3; 7.0.0 – 7.0.9; 2.0.0 – 2.0.12; 1.2.0 – 1.2.13; 1.1.0 – 1.1.6; 1.0.0 – 1.0.7 Fixed in — No fix listed CNA

CPE configurations NVD · 5

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 – 2.0.12; 7.0.0 – 7.0.9; 7.2.0 – 7.2.3VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*6.3.0 – 6.3.23; 6.4.0 – 6.4.3; 7.0.0 – 7.0.6VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:7.2.0:*:*:*:*:*:*:*7.2.0VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:7.2.1:*:*:*:*:*:*:*7.2.1VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*5.0.0 – 5.0.14; 5.2.0 – 5.2.15; 5.4.0 – 5.4.13; 5.6.0 – 5.6.14; 6.0.0 – 6.0.17; 6.2.0 – 6.2.15; 6.4.0 – 6.4.13; 7.0.0 – 7.0.9; 7.2.0 – 7.2.4VulnerableFortinet
  • 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 – 2.0.12; 7.0.0 – 7.0.9; 7.2.0 – 7.2.3 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* Versions 6.3.0 – 6.3.23; 6.4.0 – 6.4.3; 7.0.0 – 7.0.6 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:7.2.0:*:*:*:*:*:*:* Versions 7.2.0 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:7.2.1:*:*:*:*:*:*:* Versions 7.2.1 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 5.0.0 – 5.0.14; 5.2.0 – 5.2.15; 5.4.0 – 5.4.13; 5.6.0 – 5.6.14; 6.0.0 – 6.0.17; 6.2.0 – 6.2.15; 6.4.0 – 6.4.13; 7.0.0 – 7.0.9; 7.2.0 – 7.2.4 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-33305
  2. 2026-10-03 Alias added: GHSA-vrv2-gjv8-mw36

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