CVE-2026-57085
Summary
by MITRE • 07/14/2026
Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical out-of-bounds read flaw within the Windows Print Spooler components that enables authenticated attackers to perform local information disclosure attacks. The vulnerability stems from improper bounds checking in the print spooler subsystem where malicious code can manipulate memory access patterns to read data beyond allocated buffer boundaries. Such flaws typically occur when input validation is insufficient or when array indexing operations lack proper boundary verification mechanisms, creating opportunities for attackers to access sensitive memory regions containing confidential information.
The technical implementation of this vulnerability involves the exploitation of memory corruption patterns within the print spooler service which handles printer queue management and document processing tasks. When legitimate print jobs are submitted or processed, the system fails to adequately validate data structures used in memory operations, allowing an attacker with local access to craft malicious input that triggers the out-of-bounds read condition. This type of vulnerability maps directly to CWE-125 - Out-of-bounds Read which is categorized under the broader weakness class of memory safety issues and aligns with ATT&CK technique T1068 - Exploitation for Privilege Escalation.
From an operational standpoint, this vulnerability presents significant risks as it requires only local authentication to exploit, making it particularly dangerous in environments where users have legitimate access to systems. The information disclosure impact can range from sensitive configuration data to user credentials stored within memory buffers, potentially exposing system internals that could aid in further exploitation attempts. Attackers may leverage this initial foothold to gather intelligence about the target system before attempting more sophisticated attacks such as privilege escalation or lateral movement within the network infrastructure.
Mitigation strategies should focus on implementing robust input validation and bounds checking mechanisms throughout the print spooler subsystem, while also ensuring that systems are regularly updated with security patches from Microsoft. Network segmentation and access controls can help limit the potential impact of local exploitation attempts, though the most effective defense remains timely patch management and maintaining up-to-date security configurations. Organizations should also consider implementing monitoring solutions that can detect anomalous memory access patterns or unusual print job processing behaviors that might indicate exploitation attempts. The vulnerability underscores the importance of secure coding practices and comprehensive code review processes to prevent similar issues in other system components, particularly those handling untrusted input data through complex memory management operations.