CVE-2025-25249
Fortinet · published 2026-01-13
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-09-09).
- CISA's name for it: Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
- CISA's description: Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows an attacker to execute unauthorized code or commands via specially crafted packets.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Fortinet, Inc. via the CVE Program.
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
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiSwitchManager | 7.2.2 – 7.2.5 and earlier: affected |
| Fortinet | FortiOS | 7.6.0 – 7.6.2 and earlier: affected 7.4.0 – 7.4.7 and earlier: affected 7.2.4 – 7.2.11 and earlier: affected |
Added by siemens-SADP (Authorized Data Publisher)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | RUGGEDCOM APE1808 | 0 – before *: affected |
Products named in NVD's CPE match criteria (4)
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisase:25.1.39:*:*:*:-:*:*:*cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 8.1 HIGH — as published by Fortinet, Inc. (Secondary)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1: 9.8 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- 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
Source dates: published 2026-01-13, last changed 2026-10-07. DeSpy's copy of this version is dated 2026-10-07.
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