CVE-2026-24282 in Windows
Summary
by MITRE • 03/10/2026
Out-of-bounds read in Push Message Routing Service allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 03/13/2026
The vulnerability identified as CVE-2026-24282 represents a critical out-of-bounds read flaw within the Push Message Routing Service component of a software system. This issue specifically affects systems that handle push notifications and message routing functionalities, where the service processes incoming messages and routes them to appropriate destinations. The vulnerability manifests when the service fails to properly validate input data during message processing, leading to memory access violations that can result in unauthorized information disclosure. The affected component operates at a privileged level within the system architecture, making it particularly dangerous when exploited by authorized individuals who may have legitimate access but seek to leverage the flaw for data exfiltration.
The technical implementation of this vulnerability stems from inadequate bounds checking within the message processing pipeline of the Push Message Routing Service. When legitimate users or processes submit messages to the service, the application fails to validate the length or boundaries of the input data before attempting to read from memory locations. This flaw falls under the Common Weakness Enumeration category CWE-129, which specifically addresses insufficient validation of length of input buffers, and more broadly relates to CWE-125, which covers out-of-bounds read conditions. The service likely employs fixed-size buffers or arrays to store message components without proper boundary validation, allowing attackers to craft malicious inputs that cause the application to read memory beyond allocated boundaries.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially expose sensitive system data, user credentials, or internal communication details that should remain confidential. An authorized attacker with access to the Push Message Routing Service can exploit this flaw to extract memory contents that may include session tokens, cryptographic keys, or other sensitive information. The local nature of the vulnerability means that exploitation does not require network access or external attack vectors, making it particularly concerning for environments where privileged users have elevated access rights. This type of vulnerability aligns with ATT&CK technique T1005, which involves data from local system storage, and T1059, which covers command and scripting interpreter usage, as attackers may leverage the disclosed information to escalate privileges or conduct further reconnaissance.
Mitigation strategies for CVE-2026-24282 should focus on implementing robust input validation and bounds checking mechanisms within the Push Message Routing Service. System administrators should immediately apply security patches or updates provided by the software vendor to address the specific out-of-bounds read condition. Additionally, implementing memory protection mechanisms such as address space layout randomization and stack canaries can help prevent exploitation of similar vulnerabilities. Organizations should also consider implementing monitoring and logging for unusual message processing patterns that may indicate exploitation attempts. The implementation of defensive programming practices, including the use of safe string handling functions and proper buffer management, should be enforced throughout the codebase to prevent similar issues from arising in other components. Regular security assessments and penetration testing should be conducted to identify and remediate similar vulnerabilities across the system infrastructure.