Threat briefs

Adversaries may modify or replace Windows accessibility binaries (e.g., sethc.exe, utilman.exe) to execute malicious commands or establish persistence mechanisms before a user logs in, potentially leading to elevated privileges and unauthorized access.

Attackers can modify the msDS-AllowedToDelegateTo attribute to KRBTGT, enabling persistent domain access by requesting Kerberos tickets for the KRBTGT service.

This rule detects attempts to establish persistence on Windows endpoints by abusing Microsoft Office add-ins through the creation of malicious files in Office startup directories.

Detects suspicious modifications to the Windows Startup shell folder, a technique used to bypass detections monitoring file creation in the Windows Startup folder.

Detects the creation of a hidden local user account by appending a dollar sign ($) to the account name, a technique used by attackers to persist on a system and evade standard account listing methods.

Detects modifications to the AdminSDHolder object in Active Directory, which attackers can abuse via the SDProp process to implement a persistent backdoor by manipulating permissions on protected accounts and groups to regain administrative privileges.

Microsoft Office Word is vulnerable to CVE-2026-40364, a type confusion vulnerability that allows an unauthorized attacker to execute code locally.

A heap-based buffer overflow vulnerability in Microsoft Office allows an unauthenticated, local attacker to execute arbitrary code.

A heap-based buffer overflow vulnerability, identified as CVE-2026-40362, exists in Microsoft Office Excel, allowing an unauthenticated attacker with local access to execute arbitrary code.

CVE-2026-40361 is a use-after-free vulnerability in Microsoft Office Word that allows an unauthorized attacker to execute code locally.

CVE-2026-40360 is an out-of-bounds read vulnerability in Microsoft Office Excel that allows an unauthorized attacker to disclose sensitive information locally.

CVE-2026-40359 is a use-after-free vulnerability in Microsoft Office Excel that allows a local attacker to execute arbitrary code by exploiting memory corruption.

CVE-2026-40358 describes a use-after-free vulnerability in Microsoft Office that could allow an unauthorized local attacker to execute code with elevated privileges.

CVE-2026-35438 is a missing authorization vulnerability in Windows Admin Center that allows an authorized attacker to elevate privileges over a network.

CVE-2026-35436 is a privilege escalation vulnerability in Microsoft Office Click-To-Run due to insufficient granularity of access control, allowing an authorized attacker to elevate privileges locally.

CVE-2026-35433 is a local privilege escalation vulnerability in .NET due to improper input validation, allowing an unauthorized attacker to elevate privileges.

CVE-2026-35424 is a denial-of-service vulnerability in the Windows Internet Key Exchange (IKE) Protocol caused by a missing release of memory after its effective lifetime, allowing an unauthenticated remote attacker to trigger a denial of service over a network.

CVE-2026-35421 is a heap-based buffer overflow vulnerability in Windows Graphics Device Interface (GDI) that allows an unauthorized attacker to execute arbitrary code locally with elevated privileges.

CVE-2026-35420 is a heap-based buffer overflow vulnerability in the Windows Kernel that allows an authorized local attacker to elevate privileges.

CVE-2026-35418 is a use-after-free vulnerability in the Windows Cloud Files Mini Filter Driver that allows an authorized local attacker to elevate privileges.

CVE-2026-35417 is a type confusion vulnerability in Windows Win32K - ICOMP that allows an authorized attacker to elevate privileges locally.

CVE-2026-35416 is a use-after-free vulnerability in the Windows Ancillary Function Driver for WinSock, enabling a locally authorized attacker to escalate privileges.

CVE-2026-35415 is an integer overflow vulnerability in the Windows Storage Spaces Controller that allows a locally authorized attacker to elevate privileges.

Adobe Illustrator versions 29.8.6, 30.3 and earlier are affected by a heap-based buffer overflow vulnerability (CVE-2026-34687) that can lead to arbitrary code execution if a user opens a malicious file.

Adobe Substance3D Painter versions 12.0.2 and earlier are vulnerable to an out-of-bounds write, potentially leading to arbitrary code execution if a user opens a malicious file.

Adobe Substance3D Painter versions 12.0.2 and earlier are vulnerable to an out-of-bounds write vulnerability (CVE-2026-34675) that could lead to arbitrary code execution if a user opens a malicious file.

Adobe Illustrator versions 29.8.6, 30.3 and earlier are affected by an out-of-bounds write vulnerability (CVE-2026-34661) that could lead to arbitrary code execution when a user opens a malicious file.

Adobe After Effects versions 26.0, 25.6.4 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user if a victim opens a malicious file.

Adobe After Effects versions 26.0, 25.6.4, and earlier are susceptible to an out-of-bounds write vulnerability, potentially leading to arbitrary code execution when a user opens a malicious file.

Adobe After Effects versions 26.0, 25.6.4 and earlier are vulnerable to a heap-based buffer overflow (CVE-2026-34642) that could lead to arbitrary code execution when a user opens a malicious file.