The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four critical vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, stating they are being exploited in the wild. The shortcomings added to the KEV catalog are listed below - CVE-2026-65400 (CVSS score: 9.8) - An improper authentication vulnerability impacting Apple macOS that could allow an

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.   CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability CVE-2026-55040 Microsoft SharePoint Weak Authentication Vulnerability CVE-2026-59310 Broadcom VMware vCenter Path Traversal Vulnerability   CVE-2026-65400 Apple macOS Improper Authentication 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 ...

Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials.

A recently patched security flaw in Apple macOS is being actively exploited by hackers to bypass authentication, gain root access, and install a cryptominer, the Netherlands’ National Cyber Security Centre (NCSC) warns. The vulnerability, tracked as CVE-2026-65400, , let attackers authenticate to macOS Screen Sharing without valid login credentials. Apple fixed the issue with updates to macOS Sequoia (15.7.9), Sonoma (14.8.9), and Tahoe (26.6.1), and advised its macOS users to upgrade their systems. “An authentication … More → The post Attackers exploit patched macOS Screen Sharing flaw to deploy cryptominer appeared first on Help Net Security .

Hackers are exploiting a macOS Screen Sharing flaw to gain root access and install Monero miners on Macs with port 5900 exposed online. The Dutch National Cyber Security Centre confirmed active exploitation of a critical macOS authentication flaw, tracked as CVE-2026-65400 (CVSS score of 9.8), less than two weeks after Apple shipped the fix. The […]

A recently patched security flaw in Apple macOS has come under active exploitation in the wild to deploy a cryptocurrency miner, the Netherlands National Cyber Security Centre (NCSC-NL) has warned. The vulnerability in question is CVE-2026-65400 (CVSS score: 9.8), a critical authentication issue impacting the Screen Sharing component that could allow an attacker already on the network to