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THE THREATOn June 25th, 2025, Citrix disclosed a critical vulnerability identified as CVE-2025-6543 (CVSS score: 9.2), impacting NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway…
Jun 25, 2025THE THREAT In June 2025, eSentire’s Threat Response Unit (TRU) identified an incident involving the installation of a trojanized version of SonicWall’s NetExtender VPN…
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Microsoft has disclosed five actively exploited zero-day vulnerabilities in the July Patch Tuesday release. It is critical that organizations prioritize the patching of these vulnerabilities as exploitation is ongoing. The zero-day vulnerabilities from this release are classified as Remote Code Execution (RCE), Privilege Escalation, and Security Feature Bypass. Microsoft has not released technical details on real-world attacks involving the newly disclosed vulnerabilities at this time.
It should be noted that all of the exploited vulnerabilities from this release require either user interaction or previous access to the vulnerable system; this reduces the likelihood of rapid adoption and widespread exploitation. All five vulnerabilities are reported to be exploited in targeted attacks at this time.
This month Microsoft addressed a total of 130 separate vulnerabilities. This is by far the largest number of vulnerabilities included in a Microsoft Patch Tuesday release this year. Additionally, this is the last Patch Tuesday before BlackHat, which may explain the above-average zero-day count. While the zero-day vulnerabilities are most concerning, there are five additional vulnerabilities that Microsoft tracks as “exploitation more likely.”
The zero-day vulnerabilities from this release are as follows:
CVE-2023-36884 (CVSS: 8.3) - Office and Windows HTML Remote Code Execution Vulnerability
CVE-2023-35311 (CVSS: 8.8) - Microsoft Outlook Security Feature Bypass Vulnerability
CVE-2023-32049 (CVSS: 8.8) - Windows SmartScreen Security Feature Bypass Vulnerability
CVE-2023-32046 (CVSS: 7.8) - Windows MSHTML Platform Elevation of Privilege Vulnerability
CVE-2023-36874 (CVSS: 7.8) - Windows Error Reporting Service Elevation of Privilege Vulnerability
References:
[1] https://msrc.microsoft.com/update-guide/vulnerability
[2] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36884
[3] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311
[4] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32049
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-32046
[6] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36874