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onyx --cves cve-2025-25249

CVE-2025-25249

HIGHKEVPOCFortinet FortiOS
score
21.1
cvss
8.1
epss
3.8%
published
2026-01-13
kev added
2026-09-09
first seen

Fortinet FortiOS 6.4.0 through 6.4.16, 7.0.0 through 7.0.17, 7.2.0 through 7.2.11, 7.4.0 through 7.4.8, 7.6.0 through 7.6.3, FortiSASE 25.1.a.2 and 25.2.b, and FortiSwitchManager 7.0.0 through 7.0.5 and 7.2.0 through 7.2.6 contain a heap-based buffer overflow caused by improper handling of specially crafted packets, letting attackers execute unauthorized code or commands remotely, exploit requires network access.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2026-01-13 — PublishedP2026-09-09 — Added to CISA KEVK2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score 21.121.1epss2026-09-22: epss 2.4%2026-09-23: epss 2.4%2026-09-24: epss 3.9%2026-09-25: epss 3.9%2026-09-26: epss 3.9%2026-09-27: epss 3.9%2026-09-29: epss 3.9%2026-09-30: epss 3.9%2026-10-01: epss 3.9%2026-10-02: epss 3.9%2026-10-03: epss 3.9%2026-10-04: epss 3.9%2026-10-05: epss 3.9%2026-10-06: epss 3.9%2026-10-07: epss 3.9%2026-10-08: epss 3.9%2026-10-09: epss 3.8%2026-10-10: epss 3.8%2026-10-11: epss 3.8%2026-10-12: epss 3.8%2026-10-13: epss 3.8%2026-10-14: epss 3.8%2026-10-15: epss 3.8%2026-10-16: epss 3.8%2026-10-18: epss 3.8%2026-10-19: epss 3.8%2026-10-20: epss 3.8%2026-10-21: epss 3.8%3.8%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Added to CISA KEV
  3. Tracked by Onyx
  4. Public PoC

Exploit availability

Public PoC flagged by vulnx; no direct exploit link among the citations.

Weaknesses

CWE-122 CWE-787

References 4