CVE-2026-84392: Denial of service in Fortinet FortiOS
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiPAM 1.9.0, FortiPAM 1.8 all versions, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.6, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an authenticated attacker to crash the httpsd daemon via crafted HTTP requests.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-84392) involves a NULL Pointer Dereference (CWE-476) in Fortinet FortiOS versions 7.4 and 7.2 (all versions), FortiPAM versions 1.0 through 1.9.0 (all versions), and FortiProxy versions 7.4, 7.2 (all versions), and 7.6.0 through 7.6.6. An authenticated attacker can exploit this flaw by sending specially crafted HTTP requests to the httpsd daemon, causing it to crash and resulting in a denial of service. The vulnerability has a CVSS v3.1 base score of 2.5, indicating low severity. The vendor has released an official fix to address this issue.
Potential Impact
An authenticated attacker can cause a denial of service by crashing the httpsd daemon on affected Fortinet products. There is no impact on confidentiality or integrity, only availability is affected. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Fortinet. Users should apply the vendor-provided patches to affected versions to remediate this vulnerability. Since the vulnerability requires authentication and results in denial of service only, prioritization can be based on exposure and operational impact.
CVE-2026-84392: Denial of service in Fortinet FortiOS
Description
A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiPAM 1.9.0, FortiPAM 1.8 all versions, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.6, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions may allow an authenticated attacker to crash the httpsd daemon via crafted HTTP requests.
CVSS v3.1
Score 2.5low
Affected software
cpe:2.3:a:fortinet:fortiproxy:7.6.6:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.5:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiproxy:7.6.1:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-84392) involves a NULL Pointer Dereference (CWE-476) in Fortinet FortiOS versions 7.4 and 7.2 (all versions), FortiPAM versions 1.0 through 1.9.0 (all versions), and FortiProxy versions 7.4, 7.2 (all versions), and 7.6.0 through 7.6.6. An authenticated attacker can exploit this flaw by sending specially crafted HTTP requests to the httpsd daemon, causing it to crash and resulting in a denial of service. The vulnerability has a CVSS v3.1 base score of 2.5, indicating low severity. The vendor has released an official fix to address this issue.
Potential Impact
An authenticated attacker can cause a denial of service by crashing the httpsd daemon on affected Fortinet products. There is no impact on confidentiality or integrity, only availability is affected. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Fortinet. Users should apply the vendor-provided patches to affected versions to remediate this vulnerability. Since the vulnerability requires authentication and results in denial of service only, prioritization can be based on exposure and operational impact.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2026-09-01T16:36:13.308Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6aa03d6bacd9273b49f0b440
Added to database: 09/08/2026, 16:52:59 UTC
Last enriched: 09/08/2026, 17:07:49 UTC
Last updated: 09/08/2026, 17:38:01 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.