CVE-2025-53843

CWE-121 — Stack-based Buffer Overflow4 documents4 sources
Severity
7.5HIGH
EPSS
0.0%
top 98.01%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Fortinet Fortios
Timeline
PublishedNov 18

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.6 | Impact: 5.9

Affected Packages2 packages

▶NVDfortinet/fortios6.4.0 — 7.4.9+1
▶CVEListV5fortinet/fortios7.6.0 — 7.6.3+4

🔴Vulnerability Details

2
GHSA
GHSA-69h7-jm2r-gmcg: A stack-based buffer overflow in Fortinet FortiOS 7↗2025-11-18
▶
CVEList
CVE-2025-53843: A stack-based buffer overflow vulnerability in Fortinet FortiOS 7↗2025-11-18
▶

📋Vendor Advisories

1
Fortinet
Stack buffer overflow in CAPWAP daemon↗2025-11-18
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CVE-2025-53843 (HIGH CVSS 7.5) | A stack-based buffer overflow vulne | cvebase.io