Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Fortinet FortiOS and FortiProxy
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U H H H 9.8 .9826 99.9 YES
AFFECTED
Product Versions Fixed
FortiOS 7.0.0 – —
FortiProxy 7.2.0 – —
TIMELINE
Dec 9 Reserved by fortinet
Jan 14 Added to CISA KEV, remediation due 2025-01-21
Jan 14 Published (CNA: fortinet)
Aug 5 RESCORED — CVE-2024-55591 (Fortinet FortiOS). CVSS 9.6 → 9.8 (NVD).
Description
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| December 9, 2024 | Reserved | Reserved by fortinet |
| January 14, 2025 | KEV ADDED | Added to CISA KEV, remediation due 2025-01-21 |
| January 14, 2025 | Published | Published (CNA: fortinet) |
| August 5, 2026 | RESCORED | RESCORED — CVE-2024-55591 (Fortinet FortiOS). CVSS 9.6 → 9.8 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Fortinet | FortiOS | — | 7.0.0 | — |
| Fortinet | FortiProxy | — | 7.2.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-55591 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 Wednesday, August 19, 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.