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VulnerabilityPublished Updated

CVE-2024-46668: Fortinet FortiOS · Denial of Service

Affects Fortinet FortiOSSource CVE Database V5

0

Public exploit available · CVSS 7.1 High.

Data as of 26 Oct 2026, 12:29 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 62% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Jan 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiOSAffected
  • 6.4.0 – 7.4.0
4 affected builds
Fixed in–

AI-suggested

  1. Monitor Fortinet advisories closely and apply security patches or firmware updates as soon as they are released to address CVE-2024-46668.
  2. Implement network-level controls to limit or throttle large file uploads to FortiOS devices, such as rate limiting or file size restrictions at perimeter gateways or proxies.
  3. Employ intrusion detection and prevention systems (IDS/IPS) to detect anomalous traffic patterns consistent with large file upload floods targeting FortiOS management or upload interfaces.
  4. Restrict access to FortiOS management interfaces and upload endpoints to trusted IP addresses or VPNs to reduce exposure to unauthenticated attackers.
  5. Conduct regular capacity planning and resource monitoring on FortiOS devices to detect early signs of memory exhaustion or abnormal resource consumption.
  6. Develop and test incident response plans specifically for FortiOS device outages to minimize downtime and recovery time in case of exploitation.
  7. Consider network segmentation to isolate critical FortiOS devices and limit the blast radius of potential DoS attacks.
  8. Engage with Fortinet support for guidance on interim mitigations if patches are not yet available.

Description

An allocation of resources without limits or throttling vulnerability [CWE-770] in FortiOS versions 7.4.0 through 7.4.4, versions 7.2.0 through 7.2.8, versions 7.0.0 through 7.0.15, and versions 6.4.0 through 6.4.15 may allow an unauthenticated remote user to consume all system memory via multiple large file uploads.

References

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