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VulnerabilityPublished

CVE-2025-47294: Fortinet FortiOS · Denial of Service

Affects Fortinet FortiOSSource CVE Database V5

0

Public exploit available · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 12:29 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 58% 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:L/E:P/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 May 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
  • =7.2.0
  • =7.0.0
  • =6.4.0
Fixed in–

AI-suggested

Organizations should prioritize updating FortiOS to patched versions beyond 7.2.7, 7.0.14, or 6.4.0 as soon as Fortinet releases official fixes. Until patches are available, network administrators should implement strict network segmentation and firewall rules to restrict access to management interfaces and the csfd daemon ports from untrusted networks. Deploying intrusion detection and prevention systems (IDS/IPS) with signatures tuned to detect anomalous or malformed requests targeting FortiOS csfd services can help identify and block exploitation attempts. Regular monitoring of FortiOS logs for unusual crashes or service restarts related to the csfd daemon is recommended to detect potential exploitation. Additionally, organizations should review and harden FortiOS configurations to minimize exposure, disable unnecessary services, and enforce strong access controls. Engaging with Fortinet support for guidance and early patch notifications is also advised.

Description

A integer overflow or wraparound in Fortinet FortiOS versions 7.2.0 through 7.2.7, versions 7.0.0 through 7.0.14 may allow a remote unauthenticated attacker to crash the csfd daemon via a specially crafted request.

References

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