Read the docs
TI-2023-22880 Aliases CVE-2023-42789GHSA-96vw-xpr8-777x

Out-of-bounds write in Fortinet FortiProxy

Priority MEDIUM 55CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03306 88th 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
Yes
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
FortinetFortiProxy7.4.0; 7.2.0 – 7.2.6; 7.0.0 – 7.0.12; 2.0.0 – 2.0.13—No fix listedCNA
FortinetFortiSASE23.2.b—No fix listedCNA
FortinetFortiOS7.4.0 – 7.4.1; 7.2.0 – 7.2.5; 7.0.0 – 7.0.12; 6.4.0 – 6.4.14; 6.2.0 – 6.2.15—No fix listedCNA
  • FortiProxy VendorFortinet Affected 7.4.0; 7.2.0 – 7.2.6; 7.0.0 – 7.0.12; 2.0.0 – 2.0.13 Fixed in — No fix listed CNA
  • FortiSASE VendorFortinet Affected 23.2.b Fixed in — No fix listed CNA
  • FortiOS VendorFortinet Affected 7.4.0 – 7.4.1; 7.2.0 – 7.2.5; 7.0.0 – 7.0.12; 6.4.0 – 6.4.14; 6.2.0 – 6.2.15 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*2.0.0 – 2.0.13; 7.0.0 – 7.0.12; 7.2.0 – 7.2.6VulnerableFortinet
cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*7.4.0VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*6.2.0 – 6.2.15; 6.4.0 – 6.4.14; 7.0.0 – 7.0.12; 7.2.0 – 7.2.5VulnerableFortinet
cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*7.4.0VulnerableFortinet
cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*7.4.1VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.0.13; 7.0.0 – 7.0.12; 7.2.0 – 7.2.6 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:* Versions 7.4.0 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.2.0 – 6.2.15; 6.4.0 – 6.4.14; 7.0.0 – 7.0.12; 7.2.0 – 7.2.5 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:* Versions 7.4.0 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:* Versions 7.4.1 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-42789
  2. 2026-10-03 Alias added: GHSA-96vw-xpr8-777x

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