Unauthenticated scan VM access through exposed VNC
Published Jul 14, 2026 · Updated Jul 14, 2026
Resource exposure in Fortinet FortiSandbox 4.4.3 through 4.4.8 and 5.0.0 through 5.0.2 allows remote attackers to access scan VM VNC servers. Fortinet identifies the flaw as exposure of the VNC resource to the wrong network sphere but has not disclosed the responsible service, function, or configuration logic. The network request requires no authentication or user interaction; the published record does not define what actions VNC access permits within a scanning VM.
Summary
What happened
Resource exposure in Fortinet FortiSandbox 4.4.3 through 4.4.8 and 5.0.0 through 5.0.2 allows remote attackers to access scan VM VNC servers. Fortinet identifies the flaw as exposure of the VNC resource to the wrong network sphere but has not disclosed the responsible service, function, or configuration logic. The network request requires no authentication or user interaction; the published record does not define what actions VNC access permits within a scanning VM.
The record
- CVE
- CVE-2026-59835
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Fortinet
- Product
- FortiSandbox
- Classifications
- CWE-668, T1021.005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.4.3 <=4.4.8
- Affected versionversion=5.0.0 <=5.0.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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