CVE-2025-53844: Execute unauthorized code or commands in Fortinet FortiOS
A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.
AI Analysis
Technical Summary
This vulnerability is an out-of-bounds write flaw in Fortinet FortiOS that affects multiple versions including 7.6.0 to 7.6.3, 7.4.0 to 7.4.8, and 7.2.0 to 7.2.11. Exploitation can lead to execution of unauthorized code or commands by sending specially crafted packets to the affected device. The CVSS v3.1 base score is 8.3, indicating high severity, with network attack vector, low attack complexity, and no user interaction required. The vendor has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an attacker with low privileges to execute arbitrary code or commands on the affected FortiOS device, potentially leading to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Fortinet for this vulnerability. Users should apply the vendor-provided patches to affected FortiOS versions as soon as possible to remediate the issue.
CVE-2025-53844: Execute unauthorized code or commands in Fortinet FortiOS
Description
A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.
CVSS v3.1
Score 8.3high
Affected software
Fortinet
FortiOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is an out-of-bounds write flaw in Fortinet FortiOS that affects multiple versions including 7.6.0 to 7.6.3, 7.4.0 to 7.4.8, and 7.2.0 to 7.2.11. Exploitation can lead to execution of unauthorized code or commands by sending specially crafted packets to the affected device. The CVSS v3.1 base score is 8.3, indicating high severity, with network attack vector, low attack complexity, and no user interaction required. The vendor has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an attacker with low privileges to execute arbitrary code or commands on the affected FortiOS device, potentially leading to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Fortinet for this vulnerability. Users should apply the vendor-provided patches to affected FortiOS versions as soon as possible to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2025-07-10T08:53:33.015Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a03652ecbff5d861008c149
Added to database: 05/12/2026, 17:36:46 UTC
Last enriched: 08/11/2026, 13:12:12 UTC
Last updated: 09/13/2026, 10:01:28 UTC
Views: 166
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.
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.