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TI-2025-36556 Aliases CVE-2025-58903GHSA-9rvw-gg78-wfm7

An Unchecked Return Value vulnerability [CWE-252] in Fortinet FortiOS version 7.6.0…

Priority LOW 23CWE-252Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An Unchecked Return Value vulnerability [CWE-252] in Fortinet FortiOS version 7.6.0 through 7.6.3 and before 7.4.8 API allows an authenticated user to cause a Null Pointer Dereference, crashing the http daemon via a specialy crafted request.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00623 50th 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
FortinetFortiOS7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.12; 7.0.0 – 7.0.18; 6.4.0 – 6.4.16—No fix listedCNA
  • FortiOS VendorFortinet Affected 7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.12; 7.0.0 – 7.0.18; 6.4.0 – 6.4.16 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*6.4.0 to before 7.4.9; 7.6.0 to before 7.6.4VulnerableFortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.4.0 to before 7.4.9; 7.6.0 to before 7.6.4 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-58903
  2. 2026-10-03 Alias added: GHSA-9rvw-gg78-wfm7
  3. 2026-11-05 EPSS moved to the 50th–90th percentile

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