NCSC-2026-0240 [1.00] [M/H] Vulnerabilities fixed in multiple Fortinet products

unknownCVE-2026-59841

Fortinet has fixed vulnerabilities in multiple versions of FortiSIEM (Windows Agent and general product versions), FortiOS, FortiPAM, and FortiProxy. A vulnerability in FortiSIEM Windows Agent (versions 7.4.0 to 7.4.1) identified as CVE-2026-59841 allows malicious actors on the same local network to escalate privileges when the 'Supers Override' feature is active. This enables attackers to execute arbitrary code and compromise the integrity of the agent. The other vulnerabilities can be exploited by an authenticated attacker with elevated privileges remotely, or with physical access. See attached references for more information.

CSIRTS triage

vendor: Fortinet product: FortiSIEM Privilege escalation Remote code executionaffected: 7.4.0 to 7.4.1

What: A vulnerability allows local network attackers to escalate privileges and execute arbitrary code.
Who is affected: Deployments of FortiSIEM Windows Agent versions 7.4.0 to 7.4.1.
Urgency: Remediation is urgent due to the potential for local privilege escalation and code execution.
Action: Update to the latest version of FortiSIEM.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: NCSC-NL Advisories (NL · national-cert · site)
Severity: unknown
Published: 2026-07-15
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://advisories.ncsc.nl/advisory?id=NCSC-2026-0240

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-598410.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-59841	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Fortinet FortiSIEM: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Fortinet products (July 15, 2026)cert-fr-avis
highCVE-2026-59841: A improper restriction of communication channel to intended endpoints vulnerability in Fortine…nvd
unknownSupers override fails to properly override supervisor addressfortinet