Multiple vulnerabilities in Fortinet products (July 15, 2026)

unknownCVE-2025-43892 CVE-2025-53379 CVE-2025-62826 CVE-2026-59839 CVE-2026-23573 CVE-2026-59840

Multiple vulnerabilities have been discovered in Fortinet products. Some of them allow an attacker to cause arbitrary code execution, privilege escalation, and a data confidentiality breach.

CSIRTS triage

vendor: Fortinet Remote code execution Privilege escalation Information disclosure

What: Multiple vulnerabilities allow an attacker to cause arbitrary code execution, privilege escalation, and a data confidentiality breach.
Who is affected: Deployments of Fortinet products are affected.
Urgency: Remediation is urgent due to the potential for arbitrary code execution and data breaches.
Action: Apply patches as they become available.

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

Details

Source: CERT-FR Avis de sécurité (FR · 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://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0879/

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-2025-438920.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Low exploitation riskCVE-2025-533790.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
Low exploitation riskCVE-2025-628260.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
Low exploitation riskCVE-2026-598390.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
Low exploitation riskCVE-2026-235730.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-598400.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-598360.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.
Low exploitation riskCVE-2026-598350.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all scored CVEs.
Low exploitation riskCVE-2026-598380.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Low exploitation riskCVE-2025-626750.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-43892	coverage & exploitation status	NVD · CVE.org
CVE-2025-53379	coverage & exploitation status	NVD · CVE.org
CVE-2025-62826	coverage & exploitation status	NVD · CVE.org
CVE-2026-59839	coverage & exploitation status	NVD · CVE.org
CVE-2026-23573	coverage & exploitation status	NVD · CVE.org
CVE-2026-59840	coverage & exploitation status	NVD · CVE.org
CVE-2026-59836	coverage & exploitation status	NVD · CVE.org
CVE-2026-59835	coverage & exploitation status	NVD · CVE.org
CVE-2026-59838	coverage & exploitation status	NVD · CVE.org
CVE-2025-62675	coverage & exploitation status	NVD · CVE.org
CVE-2026-59837	coverage & exploitation status	NVD · CVE.org
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.

Recent advisories for Fortinet products

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownNCSC-2026-0240 [1.00] [M/H] Vulnerabilities fixed in multiple Fortinet productsncsc-nl · 2026-07-15
criticalexploitedCVE-2026-24858: Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerabil…cisa-kev · 2026-01-27
criticalexploitedCVE-2025-59718: Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerabilitycisa-kev · 2025-12-16
criticalexploitedCVE-2025-32756: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerabilitycisa-kev · 2025-05-14
unknownexploitedVulnerability in Fortinet products (May 13, 2025)cert-fr-alerte · 2025-05-13
unknownexploited[Update] Vulnerability in Fortinet products (January 14, 2025)cert-fr-alerte · 2025-01-14