CVE-2026-57097 in Windows
Summary
by MITRE • 07/14/2026
Untrusted search path in Microsoft XML allows an unauthorized attacker to bypass a security feature with a physical attack.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/14/2026
The vulnerability described represents a critical untrusted search path issue within Microsoft XML processing components that can be exploited through physical attack vectors to bypass security controls. This flaw resides in how the XML parser handles library loading and path resolution, creating opportunities for attackers to inject malicious code or manipulate XML processing behavior. The security bypass occurs because the system does not properly validate or sanitize the search paths used during XML parsing operations, allowing unauthorized code execution when legitimate libraries are replaced or preloaded with malicious counterparts.
This vulnerability falls under the CWE-427 Uncontrolled Search Path Element category, which specifically addresses situations where applications use search paths that can be manipulated to load unintended libraries. The attack vector being physical access indicates that adversaries with direct hardware interaction capabilities can exploit this weakness by modifying system files, replacing legitimate XML libraries with malicious versions, or manipulating the environment in which XML processing occurs. The physical attack requirement suggests that traditional network-based exploitation methods may not suffice, but rather requires direct system manipulation through hardware-level access.
From an operational impact perspective, this vulnerability exposes systems running Microsoft XML components to potential compromise when attackers have physical access to the target machines. The security bypass can lead to privilege escalation, data exfiltration, or persistent backdoor installation within the affected environment. When combined with other attack vectors, such as social engineering or supply chain compromises that might grant physical access, this vulnerability becomes particularly dangerous for enterprise environments where physical security controls may be insufficient.
The exploitation of this vulnerability aligns with several ATT&CK techniques including T1059 Command and Scripting Interpreter and T1068 Exploitation for Privilege Escalation. Attackers can leverage the untrusted search path to execute arbitrary code through manipulated XML processing, potentially gaining elevated privileges within the system. Additionally, this weakness could enable persistence mechanisms through modified XML libraries that continue to execute malicious code during subsequent XML processing operations.
Mitigation strategies should focus on implementing proper library path validation, enforcing strict access controls on XML processing components, and implementing physical security measures to prevent unauthorized hardware access. System administrators should conduct regular audits of XML-related library paths, implement application whitelisting policies, and ensure that XML processing libraries are properly signed and validated. Microsoft recommends applying security updates promptly and configuring systems to use absolute paths rather than relative search paths when loading XML libraries. Organizations should also consider implementing monitoring solutions that can detect anomalous library loading patterns or unauthorized modifications to system files that might indicate exploitation attempts.