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TI-2023-22875 Aliases CVE-2023-42784GHSA-5wr9-jp8m-f367

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least…

Priority MEDIUM 42CWE-228Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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 · NVD. Fix status from CNA.

Summary

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least verions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute unauthorized code or commands via HTTP/S crafted requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00382 32nd 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
FortinetFortiWeb7.4.0 – 7.4.7; 7.2.0 – 7.2.10; 7.0.0 – 7.0.10—No fix listedCNA
  • FortiWeb VendorFortinet Affected 7.4.0 – 7.4.7; 7.2.0 – 7.2.10; 7.0.0 – 7.0.10 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*7.0.0 to before 7.4.7VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.4.7 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-42784
  2. 2026-10-03 Alias added: GHSA-5wr9-jp8m-f367

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-39856 Path traversal in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18919 SQL injection in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-35886 OS command injection in Fortinet FortiWeb KEVCVSS 3.1MEDIUM 6.7
  • TI-2021-05113 OS command injection in Fortinet FortiWeb CVSS 3.1HIGH 8.8
  • TI-2021-18960 Stack-based buffer overflow in Fortinet FortiWeb CVSS 3.1CRITICAL 9.8
See all 125 →

Sources

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