CVSS base score: 9.6 (Critical) vendor CNA · v3.1
Score assigned by the vendor's own CVE Numbering Authority (CNA); CISA's Vulnrichment program adds a score only when the CNA omits one.
Fortinet FortiOS Out-of-Bound Write Vulnerability
Vendor: Fortinet Product: FortiOS
Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.
Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 149 points from 2024-02-10, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 93.1% on 2025-12-20.
Check whether a specific version is affected →
What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.
| Date | Source | Article |
|---|---|---|
| 2026-06-24 | Kaspersky Securelist | StrikeShark: investigating a new campaign delivering Cobalt Strike through SharkLoader |
Articles from monitored vendor research blogs and security news feeds that specifically mention this CVE. Coverage begins when feed monitoring started; earlier articles are not indexed.
Coverage across public collections only: Nuclei and OpenVAS NVT (scan);
Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM);
Metasploit, Exploit-DB and public GitHub repositories (exploit). Absence
here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by
PoC-in-GitHub (CC0) and are not vetted:
some are fakes and some are malware. Treat them as evidence that code was
published, not as code to run.
OpenVAS coverage derives from the Greenbone Community Feed, made available
under the Open Database License (ODbL) v1.0;
its individual Vulnerability Tests are licensed
GNU GPL v2.
Defensive techniques inferred by MITRE D3FEND from the underlying weakness (CWE-787) — general hardening and detection guidance for this weakness class, not a vendor patch for this specific CVE.
| Source | Date | Record |
|---|---|---|
| CISA KEV | 2024-02-09 | source record → |
| CISA Vulnrichment | 2024-05-01 | source record → |
| Date | Advisory | Issuer |
|---|---|---|
| 2025-04-11 | Fortinet Releases Advisory on New Post-Exploitation Technique for Known Vulnerabilities | CISA |
| 2024-09-18 | People's Republic of China-Linked Actors Compromise Routers and IoT Devices for Botnet Operations | FBI |
| 2024-02-09 | Fortinet Releases Security Advisories for FortiOS | CISA |
| 2024-02-09 | 2024-018: Critical Vulnerabilities in FortiOS | CERT-EU |
No exploit-tool sightings recorded for this CVE.
Evidence tiers are explained on the About page — a merged Metasploit module is far stronger evidence than a distro package mention.
CVE.org record → NVD entry → CISA KEV catalog → FortiGuard Labs → Rapid7 AttackerKB →