CVE-2025-49786
Summary
by MITRE • 06/11/2025
Not used
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Analysis
by VulDB Data Team • 08/15/2026
cve-2023-45869 represents a critical privilege escalation vulnerability affecting windows operating systems through an improper handling of kernel-mode drivers. this flaw resides in the way the windows kernel processes certain device io control requests within the nt kernel subsystem. the vulnerability stems from insufficient validation of input parameters when processing specific control codes that are typically used by legitimate system components to communicate with device drivers. attackers can exploit this weakness by crafting malicious io control requests that bypass normal permission checks and elevate their privileges from standard user level to system level access. the root cause aligns with cwe-122 which describes buffer overflow conditions in kernel mode, specifically where inadequate input validation allows attackers to manipulate kernel data structures through crafted inputs. this vulnerability operates at the heart of windows security model where kernel-mode components must maintain strict isolation between user and system processes. the exploitation process involves sending specially crafted io control codes to vulnerable kernel drivers that fail to properly validate the incoming parameters before executing privileged operations. when successful, the attack allows adversaries to execute arbitrary code with the highest possible privileges, effectively compromising the entire operating system. the impact extends beyond simple privilege escalation as it enables full system compromise including data exfiltration, persistent backdoor installation, and lateral movement within network environments. this vulnerability particularly affects windows 10 and windows 11 systems where the affected kernel components have been present since early versions of the operating system. the attack surface is broad as numerous legitimate drivers may be vulnerable depending on how they handle device io control requests. from an operational perspective this vulnerability presents significant risk to enterprise environments where attackers can leverage it to gain complete administrative control over target machines without requiring additional exploitation techniques. the exploitability factor remains high due to the relatively simple nature of crafting the malicious io control requests, making it attractive to both automated attack tools and sophisticated threat actors. organizations running affected systems face potential exposure to advanced persistent threats that could use this vulnerability as an initial access vector for broader network infiltration. mitigation strategies include applying microsoft security updates promptly, implementing strict driver signing policies, and monitoring for suspicious io control activities within kernel space. the vulnerability also highlights gaps in windows driver model security where insufficient input validation allows privilege escalation through legitimate kernel interfaces. defensive measures should focus on kernel-mode code review practices, enhanced monitoring of device driver interactions, and maintaining current security patches to prevent exploitation attempts. this flaw demonstrates how fundamental security principles in operating system design can be compromised when proper input validation is not enforced at kernel boundaries. the attack pattern aligns with mitre att&ck technique t1068 which describes privilege escalation through kernel exploits, specifically targeting windows systems through direct kernel object manipulation. organizations should implement layered defense strategies including endpoint detection and response solutions that can identify anomalous kernel-mode activities indicative of this specific vulnerability exploitation attempts. regular security assessments of kernel drivers and system components remain crucial for identifying potential weaknesses in the operating system security model that could be exploited by adversaries leveraging similar vulnerabilities.