8.6

CVE-2026-59835: fortinet fortisandbox Exposure of Resource to Wrong Sphere

CVSS: 8.6v3.1HighAnalyzed
Published 14-07-2026Last modified 16-07-2026
Open JSON

Vulnerability summary

CVE-2026-59835 is a high (CVSS 8.6) Exposure of Resource to Wrong Sphere vulnerability in fortinet fortisandbox. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.5% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (NVD)
EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-07-2026
    PublishedVulnerability first disclosed.
  2. 16-07-2026
    Last modifiedVulnerability information updated.

Description

A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.3 through 4.4.8 may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

0.00 pp

From 0.40% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fortinet1 product
  • fortisandbox≥ 5.0.0, ≤ 5.0.2 | ≥ 4.4.3, ≤ 4.4.8 | ≥ 4.4.3, < 4.4.9 | ≥ 5.0.0, < 5.0.3

1 vendor · 1 product

References

1 links