Threat Intelligence / CVE / CVE-2026-26083

CVE-2026-26083

CVSS 9.1 (CRITICAL) · EPSS 0.1% · Priority 5.4/10 · Published 2026-05-12

As of 2026-05-13, CVE-2026-26083 is a CVSS 9.1 (CRITICAL-severity) vulnerability. EPSS exploitation probability 0.1%. Threadlinqs Intelligence tracks 1 threat exploiting it.

Last updated: 2026-05-13

A missing authorization vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox Cloud 5.0.2 through 5.0.5, FortiSandbox PaaS 23.4 all versions, FortiSandbox PaaS 23.3 all versions, FortiSandbox PaaS 23.1 all versions, FortiSandbox PaaS 22.2 all versions, FortiSandbox PaaS 22.1 all versions, FortiSandbox PaaS 21.4 all versions, FortiSandbox PaaS 21.3 all versions, FortiSandbox PaaS 5.0.0 through 5.0.1, FortiSandbox PaaS 4.4.5 through 4.4.8 may allow an unauthenticated attacker to execute unauthorized code or commands via HTTP requests.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Weaknesses (CWE)

CWE-862

Threats tracking this CVE

Fortinet Critical Unauthenticated RCE — FortiAuthenticator CVE-2026-44277 & FortiSandbox CVE-2026-26083 — CRITICAL

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-136

Full detection coverage & IOCs for threats exploiting CVE-2026-26083 are available via the Threadlinqs MCP server (Purple tier). View plans →

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.