CVE-2026-53565 Local Privilege escalation allows a low-privileged user to gain SYSTEM privileges

Improper Privilege Management vulnerability in Citrix Secure Access Client for Windows, Citrix Citrix Endpoint Analysis Client for Windows. This issue affects Secure Access Client for Windows: before 26.6.1.20; Citrix Endpoint Analysis Client for Windows: before 26. 5.1.7...

11 Old Microsoft-Signed Linux UEFI Shims Could Let Attackers Bypass Secure Boot

Cybersecurity researchers have discovered 11 old, Microsoft-signed, Unified Extensible Firmware Interface UEFI applications that could be abused to bypass Secure Boot on most systems using the modern firmware standard. "An attacker exploiting one of these vulnerable applications can execute...

Citrix Secure Access Client for Windows and Citrix Endpoint Analysis Client for Windows Security Bulletin for CVE-2026-53565 and CVE-2026-53566

Severity - High Description of Problem Vulnerabilities have been discovered in the Citrix Secure Access Client for Windows and Citrix Endpoint Analysis Client. Refer to the information below for further details: Affected Versions: The following supported versions of Citrix Secure Access Client fo...

CVE-2026-50392: Use After Free

Use after free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally...

PT-2026-58675

Name of the Vulnerable Software and Affected Versions Devolutions Server version 2026.2.11 Devolutions Server version 2026.1.22 Description Improper authorization in the PAM SSH key and certificate retrieval endpoints allows an authenticated low-privileged user to disclose the private key of an S...

PT-2026-58674

Name of the Vulnerable Software and Affected Versions Devolutions Server version 2026.2.11 Devolutions Server version 2026.1.22 Description Improper authorization in the secure messages deletion endpoint allows an authenticated user to delete messages belonging to other users. This is achieved...

CVE-2026-53566: Out-of-bounds Read

Out-of-bounds read vulnerability in Citrix Citrix Secure Access Client for Windows. This issue affects Citrix Secure Access Client for Windows: before 26.6.1.20...

CVE-2026-15058: Authorization Bypass Through User-Controlled Key

Improper authorization in the secure messages deletion endpoint in Devolutions Server 2026.2.11, 2026.1.22 allows an authenticated user to delete another user's messages via a direct object reference to the message identifier...

CVE-2026-50694: Use After Free

Use after free in Windows Secure Socket Tunneling Protocol SSTP allows an unauthorized attacker to execute code over a network...

CVE-2026-49783: Improperly Implemented Security Check for Standard

Improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally...

PT-2026-58372

Name of the Vulnerable Software and Affected Versions Windows 11 affected versions not specified Windows Server 2025 affected versions not specified Description A use-after-free issue exists in the Windows Secure Kernel Mode. This flaw allows an authorized attacker to perform a local privilege...

PT-2026-58024

Name of the Vulnerable Software and Affected Versions Citrix Secure Access Client for Windows versions prior to 26.6.1.20 Description An out-of-bounds read issue exists in the software, which occurs when the application reads data outside the intended boundary of a buffer, potentially leading to...

PT-2026-58214

Name of the Vulnerable Software and Affected Versions Microsoft Windows affected versions not specified Description A use after free issue in the Windows Secure Socket Tunneling Protocol SSTP allows an unauthorized attacker to execute code over a network. Use after free is a memory corruption fla...

CVE-2026-53565: Improper Privilege Management

Improper Privilege Management vulnerability in Citrix Secure Access Client for Windows, Citrix Citrix Endpoint Analysis Client for Windows. This issue affects Secure Access Client for Windows: before 26.6.1.20; Citrix Endpoint Analysis Client for Windows: before 26. 5.1.7...

KLA91153 Multiple vulnerabilities in Microsoft Windows

Multiple vulnerabilities were found in Microsoft Windows. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, gain privileges, obtain sensitive information, spoof user interface. Below is a complete list of...

PT-2026-58157

Name of the Vulnerable Software and Affected Versions Windows affected versions not specified Description An improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally. This issue is particularly critical for server...

CVE-2026-42982: Improper Validation of Consistency within Input

Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally...

PT-2026-58017

Name of the Vulnerable Software and Affected Versions Citrix Secure Access Client for Windows versions prior to 26.6.1.20 Citrix Endpoint Analysis Client for Windows versions prior to 26.5.1.7 Description Improper privilege management allows a low-privileged user with local access to escalate the...

KB5099539: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (July 2026)

The remote Windows host is missing security update 5099539. It is, therefore, affected by multiple vulnerabilities - Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a network. CVE-2026-58594 - Heap-based buffer overflow in Windows FTP Service...

KB5099536: Windows Server 2025 Security Update (July 2026)

The remote Windows host is missing security update 5099536. It is, therefore, affected by multiple vulnerabilities - Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a network. CVE-2026-58594 - Heap-based buffer overflow in Windows FTP Service...