Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2025-53844
Fortinet FortiOS — A out-of-bounds write 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 al…
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N U H H H 8.8 .0056 44.9 —
AFFECTED
Product Versions Fixed
FortiOS 7.6.0 – —
TIMELINE
Jul 10 Reserved by fortinet
May 12 Published (CNA: fortinet)
Sep 30 RESCORED — CVE-2025-53844 (Fortinet FortiOS). CVSS 8.3 → 8.8 (NVD).
Description
A out-of-bounds write 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 allows attacker to execute unauthorized code or commands via specially crafted packets.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 10, 2025 | Reserved | Reserved by fortinet |
| May 12, 2026 | Published | Published (CNA: fortinet) |
| September 30, 2026 | RESCORED | RESCORED — CVE-2025-53844 (Fortinet FortiOS). CVSS 8.3 → 8.8 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Fortinet | FortiOS | — | 7.6.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-53844 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
