CVE-2025-53844
Fortinet FortiOS OOB Write Code Execution Vulnerability
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.
INFO
Published Date :
May 12, 2026, 6:16 p.m.
Last Modified :
May 12, 2026, 6:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-53844
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 6abe59d8-c742-4dff-8ce8-9b0ca1073da8 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply vendor-supplied patches for FortiOS.
- Upgrade FortiOS to a fixed version.
- Monitor for unauthorized code execution.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-53844.
| URL | Resource |
|---|---|
| https://fortiguard.fortinet.com/psirt/FG-IR-26-123 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-53844 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-53844
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-53844 vulnerability anywhere in the article.
-
CybersecurityNews
Fortinet Patches Five Vulnerabilities Across FortiAP, FortiOS, and Enterprise Products
Fortinet released security advisories on May 12, 2026, addressing five vulnerabilities spanning its wireless access point controllers, network operating system, and enterprise management platforms, in ... Read more
The following table lists the changes that have been made to the
CVE-2025-53844 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
May. 12, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added Reference https://fortiguard.fortinet.com/psirt/FG-IR-26-123