CVE-2025-53843
CVSS Score
6.9
EPSS Score
0.0%
EPSS Percentile
0th
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to execute unauthorized code or commands via specially crafted packets
| CWE | CWE-121 |
| Vendor | fortinet |
| Product | fortios |
| Ecosystems | |
| Industries | NetworkingSecurity |
| Published | Nov 18, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Fortinet / FortiOS
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