Privilege Escalation

Active Directory Security / Vulnerabilities and Exploits

Certighost (CVE-2026-54121): How Low-Privilege Users Impersonate Domain Controllers

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Certighost (CVE-2026-54121) How Low-Privilege Users Impersonate Domain Controllers

Introduction Active Directory Certificate Services (AD CS) serves as a foundational component in modern enterprise identity environments, facilitating public key infrastructure (PKI), machine authentication, VPN access, and smart card logins. However, misconfigurations and deep-seated flaws in how Enterprise Certificate Authorities (CAs) process incoming certificate requests or resolve directory objects can create severe privilege escalation vectors. The Certighost vulnerability (CVE-2026-54121) exposes a critical breakdown in this identity trust boundary, allowing an

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Vulnerabilities and Exploits

Exploiting Zero-Day Vulnerabilities in SonicWall SMA Prior to Disclosure

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Exploiting Zero-Day Vulnerabilities in SonicWall SMA Prior to Disclosure

Introduction Secure Mobile Access (SMA) gateways, specifically the SonicWall SMA 1000 series, serve as vital perimeter defense components designed to facilitate secure, encrypted remote access to enterprise networks. Because these appliances are directly exposed to the public internet, they represent high-value targets for advanced threat actors seeking initial entry. Prior to official vendor disclosure and patch deployment, sophisticated malicious actors leveraged a critical zero-day

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Vulnerabilities and Exploits

Microsoft Defender Elevation of Privilege Vulnerability: CVE-2026-50656

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MIcrosoft Defender ElevatIon of PrIvIlege VulnerabIlIty CVE-2026-50656

Introduction In modern operating systems, antivirus and protection engines form the most critical layer of system security. However, by design, these software components must operate with the highest possible system privileges (NT AUTHORITY\SYSTEM). This fundamental necessity turns security engines into a primary and highly lucrative target for cyber adversaries. The local elevation of privilege (EoP) vulnerability identified within Microsoft Defender, publicly dubbed “RoguePlanet” and tracked as CVE-2026-50656, directly

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Vulnerabilities and Exploits

CVE-2026-26128: Windows SMB and NTLM Reflection Protection Bypass Vulnerability Analysis

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CVE-2026-26128 WIndows SMB and NTLM ReflectIon ProtectIon Bypass VulnerabIlIty AnalysIs

Introduction The cybersecurity landscape is confronting a dangerous new threat targeting the core authentication mechanisms of Windows operating systems. With the public release of a Proof-of-Concept (PoC) exploit code, the vulnerability designated as CVE-2026-26128 introduces severe operational risks to local networks and systems. Although early reports incorrectly associated the flaw with the Kerberos protocol, technical analysis confirms that the underlying mechanism

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Vulnerabilities and Exploits

Bad Epoll (CVE-2026-46242): The New Linux Kernel Threat That Outsmarted AI

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Bad Epoll (CVE-2026-46242) The New LInux Kernel Threat That Outsmarted AI

Introduction For years, the cybersecurity industry has increasingly relied on automated code analysis and AI-driven vulnerability scanners to secure open-source software. However, the discovery of the “Bad Epoll” vulnerability (CVE-2026-46242) in May 2026 proved that even the most advanced AI models have their limitations. Found deep within the Linux kernel’s fundamental epoll I/O framework, this Local Privilege Escalation (LPE) flaw allows a low-privileged attacker to bypass critical security

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Vulnerabilities and Exploits

Propagation Defects in the Linux Kernel: A Deep Dive Analysis of CVE-2026-43503 (DirtyClone)

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PropagatIon Defects In the LInux Kernel A Deep DIve AnalysIs of CVE-2026-43503 (DIrtyClone)

Introduction At the heart of modern operating systems, the Linux kernel relies heavily on advanced optimization techniques to maintain exceptional performance and throughput during memory management and network operations. One of the most fundamental of these architectural safeguards is the Copy-on-Write (COW) mechanism, which allows multiple unprivileged processes to share the exact same physical memory pages safely until an explicit

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Vulnerabilities and Exploits

Exploitation of Microsoft Defender Elevation of Privilege Vulnerability (CVE-2026-50656)

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Exploitation of Microsoft Defender Elevation of Privilege Vulnerability (CVE-2026-50656)

Introduction In modern operating systems, Endpoint Security components such as antivirus engines and EDR (Endpoint Detection and Response) agents operate close to the kernel layer to intercept malicious behavior. Within the Microsoft Windows ecosystem, Microsoft Defender serves as the native defense mechanism, inherently executing its tasks with the highest possible privilege level: NT AUTHORITY\SYSTEM. While this design is mandatory for system-wide remediation, any architectural or

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Vulnerabilities and Exploits

CVE-2026-20230: Unauthenticated Critical SSRF and Root Privilege Escalation on Cisco

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Introduction Enterprise voice and video communication infrastructures rely heavily on Cisco Unified Communications Manager (Unified CM / CUCM) as a core asset within modern corporate network architectures. Because these unified communications platforms handle sensitive proprietary data, orchestrate internal routing, and connect disparate branch offices, they represent highly attractive targets for sophisticated threat actors looking to establish a persistent foothold. Disclosed by Cisco PSIRT in

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Vulnerabilities and Exploits

CVE-2026-33825 (BlueHammer) – Microsoft Defender Privilege Escalation Vulnerability

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CVE-2026-33825 (BlueHammer) – MIcrosoft Defender PrIvIlege EscalatIon VulnerabIlIty

Introduction To achieve the highest level of privileges within an operating system, cyber threat actors frequently target the OS kernel or security software running with full system administrative rights. Discovered under the moniker “BlueHammer,” CVE-2026-33825 is a high-severity vulnerability that directly targets Windows’ native security mechanism, Microsoft Defender. Added by CISA to its Known Exploited Vulnerabilities (KEV) catalog due to evidence of active real-world exploitation, this

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Active Directory Security

What is DCSync Attack and Mimikatz Usage in Active Directory

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What is DCSync Attack and Mimikatz Usage in Active Directory

Introduction Active Directory (AD) serves as the backbone of enterprise IT infrastructure, managing user authentication, access control, and security policies across organizational networks. However, this critical infrastructure is frequently targeted by sophisticated attackers seeking to gain unauthorized access and maintain persistence within corporate environments. One of the most devastating attacks against Active Directory is the DCSync attack, a technique that leverages legitimate directory replication mechanisms

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