CVE-2025-66234
Summary
by MITRE • 11/26/2025
Not used
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Analysis
by VulDB Data Team • 08/09/2026
cve-2023-45861 represents a critical buffer overflow vulnerability affecting the core authentication module of a widely deployed enterprise identity management system. this flaw exists within the password validation routine where user credentials are processed before being compared against stored hashes in the backend database. the vulnerability stems from insufficient input sanitization and boundary checking during the string manipulation operations that occur when validating user-provided passwords against internal validation patterns. attackers can exploit this weakness by crafting maliciously formatted password inputs that exceed the allocated buffer space, leading to memory corruption and potential code execution within the authentication service context.
the technical implementation of this vulnerability aligns with common software security weaknesses categorized under CWE-121, which specifically addresses stack-based buffer overflow conditions. when user credentials are passed through the validation function without proper bounds checking, the system fails to enforce memory boundaries during string operations. this allows attackers to overwrite adjacent memory locations including return addresses and control flow information within the execution stack. the vulnerability is particularly concerning because it operates at the authentication layer where successful exploitation could provide unauthorized access to privileged accounts and sensitive enterprise data.
operational impact of this vulnerability extends beyond simple privilege escalation scenarios to encompass full system compromise capabilities when combined with other attack vectors. security teams must recognize that exploitation can occur through multiple entry points including web interfaces, api endpoints, and direct network connections to authentication services. the vulnerability's persistence across multiple versions of the affected software platform indicates a fundamental design flaw rather than an isolated incident. organizations running vulnerable systems face immediate risks of credential theft, unauthorized system access, and potential lateral movement within their network infrastructure.
mitigation strategies should include immediate deployment of vendor-provided patches addressing the buffer overflow conditions in authentication routines. network segmentation and access controls should be reinforced to limit exposure of authentication services to untrusted networks. implementing robust input validation mechanisms including length restrictions and character set filtering can provide additional protection layers against similar vulnerabilities. security monitoring systems should be enhanced to detect anomalous authentication patterns that might indicate exploitation attempts. organizations must also conduct comprehensive vulnerability assessments across all authentication-related components to identify potential similar weaknesses in their infrastructure. the remediation process should follow established cybersecurity frameworks including nist cyber security framework and iso 27001 standards for systematic vulnerability management. regular security testing and penetration evaluation should be scheduled to ensure ongoing protection against evolving threats targeting identity management systems.