CVE-2025-53843

published 2025-11-18

CVE-2025-53843: 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…

Priority P3 54 high 7.5 CVSS 3.1

AV N AC H PR L UI N S U C H I H A H

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

Affected

9 ranges

Vendor	Product	Version range	Fixed in
fortinet	fortinet	—	—
fortinet	fortios	—	—
fortinet	fortios	>= 6.4.0 < 7.4.9	7.4.9
fortinet	fortios	6.4.0 – 6.4.16	—
fortinet	fortios	7.0.0 – 7.0.18	—
fortinet	fortios	7.2.0 – 7.2.12	—
fortinet	fortios	7.4.0 – 7.4.8	—
fortinet	fortios	>= 7.6.0 < 7.6.4	7.6.4
fortinet	fortios	7.6.0 – 7.6.3	—

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