This Week in Threats: Sep 15–Sep 29, 2026

Weekly Threat Summary

18 vulnerabilities were added to the CISA Known Exploited Vulnerabilities (KEV) catalog this period. The highest CVSS score is 10.0.

This week includes 7 critical-severity vulnerabilities (CVSS 9.0+) that require immediate attention.

This Week's Vulnerabilities

CVE-2026-5430 — WSO2 Multiple Products Path Traversal Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-09-24
• Description: WSO2 API Control Plane, API Manager, Traffic Manager & Universal Gateway contain a path traversal vulnerability that...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-93952 — Arista VeloCloud Orchestrator Improper Input Validation Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-09-22
• Description: Arista VeloCloud Orchestrator (VCO) on-prem contains an improper input validation vulnerability that may allow a...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-88771 — Citrix NetScaler Improper Input Validation Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-27
• Description: Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-85102 — Check Point Multiple Products Improper Certificate Validation Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-22
• Description: Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-93616 — Check Point Multiple Products Path Traversal Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-22
• Description: Check Point Security Management Server, Multi-Domain Security Management Server, Log Server, Multi-Domain Log...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-94127 — F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-22
• Description: F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-71362 — Adobe Commerce and Magento Incorrect Authorization Vulnerability

• CVSS Score: 9.1 (CRITICAL)
• Date Added: 2026-09-24
• Description: Adobe Commerce and Magento contains an incorrect authorization vulnerability that could allow an attacker to...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-65660 — Microsoft SharePoint Code Injection Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-09-25
• Description: Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-7273 — Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-09-21
• Description: Zyxel GS1900 series switches contain a stack-based buffer overflow vulnerability in the CGI program which could...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-53266 — Linux Kernel Out-of-Bounds Write Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-09-18
• Description: Linux Kernel contains an out-of-bounds write vulnerability in the ebtables SNAT target which allows an ARP sender...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-58704 — Google Pixel Improper Authorization Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-09-16
• Description: Google Pixel devices contain an improper authorization vulnerability in the cellular modem. A logic error may allow...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-88772 — Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

• CVSS Score: 8.1 (HIGH)
• Date Added: 2026-09-27
• Description: Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-87902 — WordPress Core Remote File Inclusion Vulnerability

• CVSS Score: 8.1 (HIGH)
• Date Added: 2026-09-25
• Description: WordPress Core contains a remote file inclusion vulnerability which could allow an unauthenticated attacker to make...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2025-39964 — Linux Kernel Race Condition Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-09-18
• Description: Linux Kernel contains a race condition vulnerability which allows concurrent writes to the same AF_ALG socket...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2025-39682 — Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability

• CVSS Score: 7.1 (HIGH)
• Date Added: 2026-09-18
• Description: Linux Kernel contains an improper check for unusual or exceptional conditions vulnerability in the TLS receive path...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-67279 — Mikrotik RouterOS Improper Enforcement of Behavioral Workflow Vulnerability

• CVSS Score: 6.5 (MEDIUM)
• Date Added: 2026-09-25
• Description: Mikrotik RouterOS contains an improper enforcement of behavioral workflow vulnerability that could allow an...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-87886 — Acronis Backup Incorrect Default Permissions Vulnerability

• CVSS Score: None (LOW)
• Date Added: 2026-09-16
• Description: Acronis Backup plugin for cPanel & WHM and extension for Plesk contains an incorrect default permissions...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE-2026-76460 — Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

• CVSS Score: None (LOW)
• Date Added: 2026-09-16
• Description: Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) contain an incorrect use of...
• Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

What This Means for You

If you run any of the affected products, patch immediately. Critical-severity vulnerabilities are actively exploited in the wild — CISA adds them to the KEV catalog specifically because they represent real, current threats.

Use the CVSS Calculator to assess how these scores apply to your specific environment.

Cert Study Angles

These CVEs map directly to certification exam objectives. Use them as real-world case studies:

CompTIA Security+

• CVE-2026-93952 → D3 Security Architecture
• CVE-2026-85102 → D1 General Security Concepts, D3 Security Architecture
• CVE-2026-93616 → D4 Security Operations
• CVE-2026-94127 → D2 Threats & Vulnerabilities, D5 Security Program Mgmt
• CVE-2026-71362 → D2 Threats & Vulnerabilities
• CVE-2026-65660 → D2 Threats & Vulnerabilities
• CVE-2026-7273 → D2 Threats & Vulnerabilities
• CVE-2026-58704 → D4 Security Operations
• CVE-2026-67279 → D2 Threats & Vulnerabilities

ISC2 CISSP

• CVE-2026-5430 → D6 Security Assessment, D8 Software Development
• CVE-2026-93952 → D6 Security Assessment
• CVE-2026-88771 → D6 Security Assessment
• CVE-2026-85102 → D4 Communication & Network, D6 Security Assessment
• CVE-2026-93616 → D6 Security Assessment
• CVE-2026-94127 → D1 Security & Risk Mgmt, D6 Security Assessment
• CVE-2026-71362 → D5 IAM, D6 Security Assessment
• CVE-2026-65660 → D6 Security Assessment
• CVE-2026-7273 → D6 Security Assessment
• CVE-2026-53266 → D6 Security Assessment
• CVE-2026-58704 → D5 IAM, D6 Security Assessment
• CVE-2026-88772 → D6 Security Assessment
• CVE-2026-87902 → D6 Security Assessment
• CVE-2025-39964 → D6 Security Assessment
• CVE-2025-39682 → D6 Security Assessment
• CVE-2026-67279 → D6 Security Assessment
• CVE-2026-87886 → D6 Security Assessment
• CVE-2026-76460 → D5 IAM, D6 Security Assessment, D8 Software Development

AWS Solutions Architect

• CVE-2026-94127 → D1 Secure Architecture

Cisco CCNA

• CVE-2026-5430 → D1 Network Fundamentals
• CVE-2026-85102 → D1 Network Fundamentals, D5 Security Fundamentals
• CVE-2026-93616 → D1 Network Fundamentals
• CVE-2026-94127 → D1 Network Fundamentals
• CVE-2026-53266 → D1 Network Fundamentals

See all CVEs mapped to your cert: Exploit Tracker

Tools to Help

• CVSS Calculator — Score these vulnerabilities for your specific environment
• Exploit Tracker — Filter KEV vulnerabilities by certification relevance
• Study Tracker — Track your exam objective completion
• Security+ Practice Quiz — Test your knowledge of vulnerability types and mitigations

Stay Updated

This roundup is published every Tuesday. Bookmark the FixTheVuln Blog to stay on top of the latest threats — or subscribe via RSS.