CVE-2025-58903: Denial of service in Fortinet FortiOS
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.
AI Analysis
Technical Summary
This vulnerability in Fortinet FortiOS (versions 7.6.0 through 7.6.3 and before 7.4.8) is due to an unchecked return value leading to a null pointer dereference in the http daemon. An authenticated user can exploit this by sending a specially crafted API request, resulting in a denial of service condition by crashing the http daemon. The issue is tracked as CVE-2025-58903 and has an official patch available from Fortinet.
Potential Impact
The impact is limited to denial of service (DoS) causing the http daemon to crash, which may disrupt management or other services relying on the http daemon. There is no confidentiality or integrity impact. The vulnerability requires authenticated access and has a low severity rating (CVSS 2.5). No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Fortinet. Users should apply the vendor-provided patch to affected FortiOS versions to remediate this vulnerability. Since the vulnerability requires authenticated access, restricting access to trusted users and applying the patch promptly will mitigate the risk.
CVE-2025-58903: Denial of service in Fortinet FortiOS
Description
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.
CVSS v3.1
Score 2.5low
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Fortinet FortiOS (versions 7.6.0 through 7.6.3 and before 7.4.8) is due to an unchecked return value leading to a null pointer dereference in the http daemon. An authenticated user can exploit this by sending a specially crafted API request, resulting in a denial of service condition by crashing the http daemon. The issue is tracked as CVE-2025-58903 and has an official patch available from Fortinet.
Potential Impact
The impact is limited to denial of service (DoS) causing the http daemon to crash, which may disrupt management or other services relying on the http daemon. There is no confidentiality or integrity impact. The vulnerability requires authenticated access and has a low severity rating (CVSS 2.5). No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Fortinet. Users should apply the vendor-provided patch to affected FortiOS versions to remediate this vulnerability. Since the vulnerability requires authenticated access, restricting access to trusted users and applying the patch promptly will mitigate the risk.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-09-05T11:00:20.686Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 68ee6cbc1b3029e3c7e04054
Added to database: 10/14/2025, 15:31:08 UTC
Last enriched: 08/11/2026, 13:13:08 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 248
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