This Week in Threats: Aug 18–Sep 01, 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 14 critical-severity vulnerabilities (CVSS 9.0+) that require immediate attention.

This Week's Vulnerabilities

CVE-2026-21962 — Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability

• CVSS Score: 10.0 (CRITICAL)
• Date Added: 2026-08-24
• Description: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in contain an improper access control vulnerability that...
• Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE-2026-81578 — PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-31
• Description: PaperCut NG/MF contains a missing authentication for critical function vulnerability which allows an unauthenticated...
• 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-2026-60004 — Gitea Code Injection Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-25
• Description: Gitea contains a code injection vulnerability that allows an attacker with repository write access to send 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-2026-8452 — Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-26
• 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-2023-49105 — ownCloud Improper Authentication Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-27
• Description: ownCloud contains an improper authentication vulnerability that allows an attacker to access, modify, or delete any...
• 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-2026-72529 — TrueConf Server Missing Authentication for Critical Function Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-20
• Description: TrueConf Server contains a missing authentication for critical function vulnerability which could allow a remote...
• 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-2026-65400 — Apple macOS Improper Authentication Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-18
• Description: Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network 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-2026-59310 — Broadcom VMware vCenter Path Traversal Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-18
• Description: Broadcom VMware vCenter contains a path traversal vulnerability which could allow a threat actor with network access...
• 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-2026-33824 — Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability

• CVSS Score: 9.8 (CRITICAL)
• Date Added: 2026-08-18
• Description: Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable...
• 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-2025-62593 — Ray-Project Ray Code Injection Vulnerability

• CVSS Score: 9.4 (CRITICAL)
• Date Added: 2026-08-18
• Description: Ray-Project Ray contains a code injection vulnerability that could allow remote code execution. Developers using Ray...
• 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-2026-64849 — MLflow Server-Side Request Forgery Vulnerability

• CVSS Score: 9.3 (CRITICAL)
• Date Added: 2026-08-19
• Description: MLflow contains a server-side request forgery vulnerability that can allow attackers to reach internal or cloud...
• 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-2026-82078 — PaperCut NG/MF Unsafe Reflection Vulnerability

• CVSS Score: 9.1 (CRITICAL)
• Date Added: 2026-08-31
• Description: PaperCut NG/MF contains an unsafe reflection vulnerability that allows an attacker to manipulate system...
• 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-2026-55040 — Microsoft SharePoint Weak Authentication Vulnerability

• CVSS Score: 9.1 (CRITICAL)
• Date Added: 2026-08-18
• Description: Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass 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-2026-72530 — TrueConf Server Code Injection Vulnerability

• CVSS Score: 9.0 (CRITICAL)
• Date Added: 2026-08-20
• Description: TrueConf Server contains a code injection vulnerability that could allow an unauthorized remote attacker with...
• 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-2026-73570 — Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability

• CVSS Score: 8.9 (HIGH)
• Date Added: 2026-08-21
• Description: Zimbra Collaboration Suite (ZCS) contains an OS command injection vulnerability which could allow an unauthenticated...
• 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-2019-1068 — Microsoft SQL Server Remote Code Execution Vulnerability

• CVSS Score: 8.8 (HIGH)
• Date Added: 2026-08-26
• Description: Microsoft SQL Server contains a remote code execution vulnerability that could allow an attacker to execute code in...
• 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-2021-23758 — Ajax.NET Professional Deserialization of Untrusted Data Vulnerability

• CVSS Score: 8.1 (HIGH)
• Date Added: 2026-08-26
• Description: Ajax.NET Professional (AjaxPro) contains a deserialization of untrusted data vulnerability that could allow for...
• 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-2022-0995 — Linux Kernel Out-of-Bounds Write Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-08-26
• Description: Linux Kernel contains an out-of-bounds memory write vulnerability which could allow a local user to gain privileged...
• 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-2015-5287 — Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-08-26
• Description: Red Hat Automatic Bug Reporting Tool (ABRT) contains a privilege escalation vulnerability that could allow local...
• 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-2026-53362 — Linux Kernel Unspecified Vulnerability

• CVSS Score: 7.8 (HIGH)
• Date Added: 2026-08-27
• Description: Linux Kernel contains an unspecified vulnerability that can allow for privilege escalation via IPv6 networking...
• 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-2026-66384 — JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability

• CVSS Score: 5.3 (MEDIUM)
• Date Added: 2026-08-27
• Description: JFrog Artifactory contains an improper limitation of a pathname to a restricted directory vulnerability. This can...
• 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-2015-3246 — Red Hat Libuser Race Condition Vulnerability

• CVSS Score: 5.1 (MEDIUM)
• Date Added: 2026-08-26
• Description: Red Hat libuser contains a race condition vulnerability that allows authenticated local users to corrupt the...
• 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-2026-21962 → D1 General Security Concepts, D3 Security Architecture, D4 Security Operations
• CVE-2026-60004 → D2 Threats & Vulnerabilities
• CVE-2023-49105 → D3 Security Architecture
• CVE-2026-33824 → D1 General Security Concepts
• CVE-2025-62593 → D2 Threats & Vulnerabilities
• CVE-2026-64849 → D3 Security Architecture
• CVE-2026-55040 → D2 Threats & Vulnerabilities
• CVE-2026-72530 → D2 Threats & Vulnerabilities
• CVE-2026-73570 → D2 Threats & Vulnerabilities
• CVE-2019-1068 → D2 Threats & Vulnerabilities
• CVE-2021-23758 → D2 Threats & Vulnerabilities
• CVE-2015-5287 → D2 Threats & Vulnerabilities
• CVE-2026-53362 → D2 Threats & Vulnerabilities

ISC2 CISSP

• CVE-2026-21962 → D5 IAM, D6 Security Assessment
• CVE-2026-81578 → D5 IAM, D6 Security Assessment
• CVE-2026-60004 → D6 Security Assessment
• CVE-2026-8452 → D6 Security Assessment
• CVE-2023-49105 → D5 IAM, D6 Security Assessment
• CVE-2026-72529 → D5 IAM, D6 Security Assessment
• CVE-2026-65400 → D4 Communication & Network, D5 IAM, D6 Security Assessment
• CVE-2026-59310 → D4 Communication & Network, D6 Security Assessment
• CVE-2026-33824 → D6 Security Assessment
• CVE-2025-62593 → D6 Security Assessment
• CVE-2026-64849 → D6 Security Assessment
• CVE-2026-82078 → D6 Security Assessment
• CVE-2026-55040 → D5 IAM, D6 Security Assessment
• CVE-2026-72530 → D6 Security Assessment
• CVE-2026-73570 → D6 Security Assessment
• CVE-2019-1068 → D6 Security Assessment
• CVE-2021-23758 → D6 Security Assessment
• CVE-2022-0995 → D6 Security Assessment
• CVE-2015-5287 → D6 Security Assessment
• CVE-2026-53362 → D4 Communication & Network, D6 Security Assessment
• CVE-2026-66384 → D6 Security Assessment
• CVE-2015-3246 → D6 Security Assessment

Cisco CCNA

• CVE-2026-21962 → D5 Security Fundamentals
• CVE-2026-82078 → D1 Network Fundamentals
• CVE-2026-53362 → 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

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