CVE-2026-52885

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.4, NppCommands.cpp checks the HMAC of the on-disk shortcuts.xml at the moment a user command fires Time-of-Check. However, the command payload is taken from the in-memory userCommands vector, which is populated at application...

CVE-2026-52885 Notepad++ TOCTOU: HMAC Checks Disk, Executes from Memory

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.4, NppCommands.cpp checks the HMAC of the on-disk shortcuts.xml at the moment a user command fires Time-of-Check. However, the command payload is taken from the in-memory userCommands vector, which is populated at application...

CVE-2026-52885

Notepad++ Notepad++ v8.9.6.4 fixes a TOCTOU vulnerability (CVE-2026-52885) where the on-disk HMAC of shortcuts.xml is checked at trigger time while the command payload is loaded into memory at startup and never synchronized. An attacker with write access to shortcuts.xml can plant a malicious fil...

PT-2026-52973

Name of the Vulnerable Software and Affected Versions Notepad++ versions prior to 8.9.6.4 Description A Time-of-Check to Time-of-Use TOCTOU flaw exists in NppCommands.cpp. The application validates the HMAC of the shortcuts.xml file on disk when a user command is triggered, but it executes the...

EUVD-2026-35883

An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory. Affected versions: Spring Security 5.7.0 through 5.7.23;...

Trojan Hippo: Weaponizing Agent Memory for Data Exfiltration

Memory systems enable otherwise-stateless LLM agents to persist user information across sessions, but also introduce a new attack surface. We characterize the Trojan Hippo attack, a class of persistent memory attacks that operates in a more realistic threat model than prior memory poisoning work:...

CVE-2026-33155 DeepDiff has Memory Exhaustion DoS through SAFE_TO_IMPORT

DeepDiff is a project focused on Deep Difference and search of any Python data. From version 5.0.0 to before version 8.6.2, the pickle unpickler RestrictedUnpickler validates which classes can be loaded but does not limit their constructor arguments. A few of the types in SAFETOIMPORT have...

Researchers Detail Tuoni C2's Role in an Attempted 2025 Real-Estate Cyber Intrusion

Cybersecurity researchers have disclosed details of a cyber attack targeting a major U.S.-based real-estate company that involved the use of a nascent command-and-control C2 and red teaming framework known as Tuoni. "The campaign leveraged the emerging Tuoni C2 framework, a relatively new,...

CVE-2017-20201

CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 32-bit builds contained a malicious pre-entry-point loader that diverts execution from scrtcommonmainseh into a custom loader. That loader decodes an embedded blob into shellcode, allocates executable heap memory, resolves Windows API functions at...

CVE-2017-20201 CCleaner v5.33.6162 & CCleaner Cloud v1.07.3191 Malicious Backdoor Supply Chain Compromise

CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 32-bit builds contained a malicious pre-entry-point loader that diverts execution from scrtcommonmainseh into a custom loader. That loader decodes an embedded blob into shellcode, allocates executable heap memory, resolves Windows API functions at...

CVE-2017-20201

CVE-2017-20201 affects CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 (32-bit). A malicious pre-entry-point loader diverts from __scrt_common_main_seh to a custom loader that decodes an embedded blob into shellcode, allocates executable memory, resolves Windows API calls at runtime, and transf...

Threat Actors Turn to Sliver as Open Source Alternative to Popular C2 Frameworks

The legitimate command-and-control C2 framework known as Sliver is gaining more traction from threat actors as it emerges as an open source alternative to Cobalt Strike and Metasploit. The findings come from Cybereason, which detailed its inner workings in an exhaustive analysis last week. Sliver...

Threat Actors Turn to Sliver as Open Source Alternative to Popular C2 Frameworks

The legitimate command-and-control C2 framework known as Sliver is gaining more traction from threat actors as it emerges as an open source alternative to Cobalt Strike and Metasploit. The findings come from Cybereason, which detailed its inner workings in an exhaustive analysis last week. Sliver...

Koadic C3 COM Command & Control – JScript RAT

Koadic, or COM Command & Control, is a Windows post-exploitation rootkit similar to other penetration testing tools such as Meterpreter and Powershell Empire. The major difference is that Koadic does most of its operations using Windows Script Host a.k.a. JScript/VBScript, with compatibility in t...