CVE-2025-25249

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

3.7% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-25)

CISA KEV

listed 2026-09-09, due 2026-09-12

CWEs

CWE-787, CWE-122

Published

2026-01-13

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• fortinet:fortios
• fortinet:fortisase
• fortinet:fortiswitchmanager
• siemens:ruggedcom_ape1808_firmware

References

• https://fortiguard.fortinet.com/psirt/FG-IR-25-084
• https://cert-portal.siemens.com/productcert/html/ssa-864900.html
• https://socradar.io/blog/cve-2025-25249-pivotc2-fortigate-rat/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249

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