CISA Adds Six Known Exploited Vulnerabilities to Catalog
Overview
The Cybersecurity and Infrastructure Security Agency (CISA) has added six vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, indicating they are currently being exploited in the wild. These vulnerabilities affect a variety of systems, including Red Hat Libuser, Microsoft SQL Server, and Citrix NetScaler, among others. The identified vulnerabilities range from privilege escalation to remote code execution, posing serious risks to federal agencies and potentially impacting other organizations as well. CISA urges all entities to prioritize fixing these vulnerabilities to protect their systems, especially those that expose critical assets to attackers. The agency encourages reporting any additional exploited vulnerabilities that are not yet in the KEV Catalog for potential inclusion.
Key Takeaways
- Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
- Affected Systems: Red Hat Libuser, Red Hat Automatic Bug Reporting Tool, Microsoft SQL Server, Ajax.NET Professional, Linux Kernel, Citrix NetScaler ADC, Citrix NetScaler Gateway.
- Action Required: Federal agencies are required to rapidly remediate these vulnerabilities as per Binding Operational Directive 26-04.
- Timeline: Newly disclosed
Original Article Summary
CISA has added six new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2015-3246 Red Hat Libuser Race Condition Vulnerability CVE-2015-5287 Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability CVE-2019-1068 Microsoft SQL Server Remote Code Execution Vulnerability CVE-2021-23758 Ajax.NET Professional Deserialization of Untrusted Data Vulnerability CVE-2022-0995 Linux Kernel Out-of-Bounds Write Vulnerability CVE-2026-8452 Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.
Impact
Red Hat Libuser, Red Hat Automatic Bug Reporting Tool, Microsoft SQL Server, Ajax.NET Professional, Linux Kernel, Citrix NetScaler ADC, Citrix NetScaler Gateway.
Exploitation Status
This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.
Timeline
Newly disclosed
Remediation
Federal agencies are required to rapidly remediate these vulnerabilities as per Binding Operational Directive 26-04. Organizations should prioritize patching high-risk CVEs, especially those listed in the KEV Catalog, and check for compromises before applying patches. Specific patches or updates were not detailed in the article.
Additional Information
This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.
Related Topics: This incident relates to Linux, CVE, Microsoft, and 5 more.