CVE-2026-50427 in Windows
Summary
by MITRE • 07/14/2026
Use after free in Content Delivery Manager allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical use-after-free flaw within the Content Delivery Manager component that enables authenticated attackers to achieve local privilege escalation. The issue arises from improper memory management where freed memory blocks are still referenced or accessed by subsequent operations, creating opportunities for malicious code execution and privilege manipulation. Such vulnerabilities typically stem from inadequate input validation and memory deallocation procedures within the application's core functionality.
The technical implementation of this flaw involves a scenario where the Content Delivery Manager handles content processing operations that involve dynamic memory allocation and deallocation. When an attacker with legitimate credentials can manipulate the content delivery workflow, they may trigger conditions that cause the system to free memory resources while maintaining references to them. This creates a window where malicious code can overwrite freed memory locations with crafted payloads, potentially executing code with elevated privileges. The vulnerability specifically targets the local privilege escalation vector as it leverages existing authenticated access to exploit memory management flaws.
From an operational perspective, this vulnerability presents significant risks to system security integrity since it requires only authorized user credentials to exploit. Attackers can leverage their legitimate access to content delivery functions to manipulate memory states and subsequently gain administrative privileges on the target system. The impact extends beyond immediate privilege escalation as it may enable further lateral movement within networks, data exfiltration, or persistence mechanisms that could compromise entire organizational infrastructures.
Mitigation strategies for this vulnerability should encompass multiple defensive layers including immediate patch deployment from vendors, implementation of memory safety checks, and enhanced monitoring of content delivery operations. System administrators should enforce least privilege principles to limit the potential impact of compromised accounts, while also implementing runtime protections such as address space layout randomization and data execution prevention mechanisms. Regular security assessments and code reviews focusing on memory management practices can help identify similar vulnerabilities within the Content Delivery Manager and related components.
This vulnerability aligns with CWE-416 which specifically addresses use-after-free conditions in software implementations, representing a well-documented class of memory safety issues that frequently lead to privilege escalation exploits. The ATT&CK framework categorizes this as a privilege escalation technique under T1068, where attackers leverage application flaws to gain elevated system privileges. Organizations should consider implementing comprehensive vulnerability management programs that include regular security assessments and penetration testing to identify and remediate similar use-after-free conditions across their content delivery infrastructure.