This Week in Threats: Sep 08–Sep 22, 2026

Weekly Threat Summary

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

This week includes 8 critical-severity vulnerabilities (CVSS 9.0+) that require immediate attention.

This Week's Vulnerabilities

CVE-2026-85706 — GitLab Community Edition and Enterprise Edition Path Traversal Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-09-11
• Description: GitLab Community Edition and Enterprise Edition contains a path traversal vulnerability that allows 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-2026-20079 — Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-09-09
• Description: Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management...
• 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-2026-75650 — Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-09-08
• Description: Adobe Commerce and Magento Open Source contain an improper neutralization of special elements used in a template...
• 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-2026-84869 — ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability

• CVSS Score: 9.9 (CRITICAL)
• Date Added: 2026-09-11
• Description: ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability...
• 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-2026-76461 — Cisco Secure Email Gateway SQL Injection Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-14
• Description: Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could 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-2026-86060 — MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-10
• Description: MikroTik RouterOS contains an improper neutralization of argument delimiters in a command vulnerability which allows...
• 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-2026-19490 — Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-09
• Description: Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate...
• 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-2026-86218 — N-able N-central Static Code Injection Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-09-08
• Description: N-able N-central contains a static code injection vulnerability that could allow for pre-authentication remote code...
• 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-2026-87491 — Google Chromium V8 Out of Bounds Write Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-09-09
• Description: Google Chromium V8 contains an out of bounds write vulnerability that allows a remote attacker to execute arbitrary...
• 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-2026-67277 — MikroTik RouterOS Missing Authentication for Critical Function Vulnerability

• CVSS Score: 8.2 (HIGH)
• Date Added: 2026-09-10
• Description: MikroTik RouterOS contains a missing authenticaion for critical function vulnerability which allows kernel memory...
• 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-2026-42016 — JFrog Artifactory Incorrect Authorization Vulnerability

• CVSS Score: 8.1 (HIGH)
• Date Added: 2026-09-11
• Description: JFrog Artifactory contains an incorrect authorization vulnerability that allows leads to privilege escalation attack...
• 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-2025-25249 — Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability

• CVSS Score: 8.1 (HIGH)
• Date Added: 2026-09-09
• Description: Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows...
• 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-2026-85880 — Microsoft Windows Heap-Based Buffer Overflow Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-09-08
• Description: Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows 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-2026-81963 — Microsoft Windows Link Following Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-09-08
• Description: Microsoft Windows Update Stack contains a link following vulnerability that allows a local attacker to escalate...
• 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-2026-42018 — JFrog Artifactory Improper Authentication Vulnerability

• CVSS Score: 7.5 (HIGH)
• Date Added: 2026-09-11
• Description: JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user...
• 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-2026-87886 — 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-2026-20079 → D2 Threats & Vulnerabilities, D3 Security Architecture
• CVE-2026-75650 → D2 Threats & Vulnerabilities
• CVE-2026-76461 → D2 Threats & Vulnerabilities
• CVE-2026-19490 → D2 Threats & Vulnerabilities
• CVE-2026-86218 → D2 Threats & Vulnerabilities
• CVE-2026-7273 → D2 Threats & Vulnerabilities
• CVE-2026-58704 → D4 Security Operations
• CVE-2026-42016 → D2 Threats & Vulnerabilities
• CVE-2025-25249 → D2 Threats & Vulnerabilities
• CVE-2026-85880 → D2 Threats & Vulnerabilities

ISC2 CISSP

• CVE-2026-85706 → D6 Security Assessment
• CVE-2026-20079 → D4 Communication & Network, D5 IAM, D6 Security Assessment, D8 Software Development
• CVE-2026-75650 → D6 Security Assessment
• CVE-2026-84869 → D5 IAM, D6 Security Assessment
• CVE-2026-76461 → D6 Security Assessment, D8 Software Development
• CVE-2026-86060 → D6 Security Assessment
• CVE-2026-19490 → D5 IAM, D6 Security Assessment
• CVE-2026-86218 → D5 IAM, D6 Security Assessment
• CVE-2026-7273 → D6 Security Assessment
• CVE-2026-53266 → D6 Security Assessment
• CVE-2026-58704 → D5 IAM, D6 Security Assessment
• CVE-2026-87491 → D6 Security Assessment
• CVE-2026-67277 → D5 IAM, D6 Security Assessment
• CVE-2026-42016 → D5 IAM, D6 Security Assessment
• CVE-2025-25249 → D6 Security Assessment
• CVE-2025-39964 → D6 Security Assessment
• CVE-2026-85880 → D6 Security Assessment
• CVE-2026-81963 → D6 Security Assessment
• CVE-2026-42018 → D5 IAM, D6 Security Assessment
• CVE-2025-39682 → D6 Security Assessment
• CVE-2026-87886 → D6 Security Assessment
• CVE-2026-76460 → D5 IAM, D6 Security Assessment, D8 Software Development

Cisco CCNA

• CVE-2026-20079 → D5 Security Fundamentals
• CVE-2026-53266 → D1 Network Fundamentals
• CVE-2025-25249 → 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.