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9.8CRITICAL

CISA Adds 6 Known Exploited Flaws in Fortinet, Microsoft, and Adobe Software

📅 14 April 2026 at 05:39 UTC📰 The Hacker NewsView original source ↗

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added half a dozen security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The list of vulnerabilities is as follows - CVE-2026-21643 (CVSS score: 9.1) -  An SQL injection vulnerability in  Fortinet FortiClient EMS that could allow an unauthenticated attacker to

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

The US Cybersecurity and Infrastructure Security Agency (CISA) has added six known exploited vulnerabilities in Fortinet, Microsoft, and Adobe software to its Known Exploited Vulnerabilities catalog, indicating active exploitation of these flaws. This highlights the importance of timely patching and updating affected systems to prevent potential attacks.

⚙️Technical Details
CVEs
CVE-2026-21643
Affected Systems
Fortinet FortiClient EMS
Attack Vectors
NETWORK
💥Impact Assessment
Severity: C
Who Is at Risk
Organizations running Fortinet FortiClient EMS, as well as individuals using affected software, are at risk of exploitation.
🛡️Recommended Actions
1Immediately apply available security patches to Fortinet FortiClient EMS
2Monitor system logs for suspicious activity and implement intrusion detection systems
3Conduct regular vulnerability assessments and penetration testing to identify potential weaknesses
📦Affected Products
Fortinet ForticlientemsMicrosoft software
🔐NVD Verified DataVERIFIED
CVE-2026-21643CVSS 9.8CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-89
Affected Products (CPE)
Fortinet Forticlientems

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