CVE-2026-21643

The CVE Watchtower: Weekly Threat Intelligence Briefing (April 13 – April 19, 2026)

MCP Security Vulnerability Management

The CVE Watchtower: Weekly Threat Intelligence Briefing (April 13 – April 19, 2026)

Do Son April 20, 2026

This week's digest: 1,214 new bugs, including active exploits on 2009 Excel fossils and critical 10.0 flaws in new AI/MCP infrastructure. Priority: Patch now.

CISA Adds 7 Fresh Exploits to KEV Catalog CISA KEV Catalog Active Exploitation CVE-2023-33063 - CVE-2023-34192 and CVE-2024-49035

CISA KEV Catalog Active Exploitation CVE-2023-33063 - CVE-2023-34192 and CVE-2024-49035

CISA Adds 7 Fresh Exploits to KEV Catalog

Do Son April 14, 2026

CISA adds 7 active exploits to the KEV catalog, from legacy Office bugs to 2026 Fortinet zero-days. Patch these high-risk flaws now to secure your network.

Publicly Disclosed: Bishop Fox Reveals Critical Pre-Auth SQL Injection in FortiClient EMS FortiSandbox Vulnerability Unauthenticated RCE FortiClient EMS Vulnerability CVE-2026-21643 FortiClient EMS Vulnerability CVE-2026-21643 CVE-2023-34992 - CVE-2023-37936 Fortinet Vulnerabilities CVE-2025-64155

FortiSandbox Vulnerability Unauthenticated RCE FortiClient EMS Vulnerability CVE-2026-21643 FortiClient EMS Vulnerability CVE-2026-21643 CVE-2023-34992 - CVE-2023-37936 Fortinet Vulnerabilities CVE-2025-64155

Publicly Disclosed: Bishop Fox Reveals Critical Pre-Auth SQL Injection in FortiClient EMS

Do Son March 17, 2026

Bishop Fox publicly disclosed details of a critical 9.1 CVSS zero-click SQL injection in FortiClient EMS (CVE-2026-21643). Patch to 7.4.5 immediately.

Endpoint Exposed: Critical FortiClient EMS Flaw (CVSS 9.1) Allows Unauthenticated RCE FortiSandbox Vulnerability Unauthenticated RCE FortiClient EMS Vulnerability CVE-2026-21643 FortiClient EMS Vulnerability CVE-2026-21643 CVE-2023-34992 - CVE-2023-37936 Fortinet Vulnerabilities CVE-2025-64155

FortiSandbox Vulnerability Unauthenticated RCE FortiClient EMS Vulnerability CVE-2026-21643 FortiClient EMS Vulnerability CVE-2026-21643 CVE-2023-34992 - CVE-2023-37936 Fortinet Vulnerabilities CVE-2025-64155

Endpoint Exposed: Critical FortiClient EMS Flaw (CVSS 9.1) Allows Unauthenticated RCE

Do Son February 9, 2026

Fortinet warns of critical SQL injection CVE-2026-21643 in FortiClient EMS 7.4.4. Unauthenticated attackers can execute code. Update to v7.4.5 now.

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CVE-2026-123158CVSS 8.1
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A vulnerability was identified in TOTOLINK CA300-PoE 6.2c.884. The affected element is the function setLanConfig of the file...
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CVE-2026-18535CVSS 9.6
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 are vulnerable to a Regular Expression Denial of...
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CVE-2026-18836CVSS 9.3
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive...
📅 Updated: Nov 7, 2026
CVE-2026-18838CVSS 9.4
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information and modify API...
📅 Updated: Nov 7, 2026
CVE-2026-17408CVSS 9.8
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote attacker to execute arbitrary...
📅 Updated: Nov 7, 2026
CVE-2026-17409CVSS 9.4
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote attacker to execute unauthorized...
📅 Updated: Nov 7, 2026
CVE-2026-17410CVSS 9.9
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to access...
📅 Updated: Nov 7, 2026
CVE-2026-17402CVSS 9.9
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to execute...
📅 Updated: Nov 7, 2026