CVE-2026-57985

Microsoft · Edge (Chromium-based)

Improper input validation in Microsoft Edge (Chromium-based) enables an unauthenticated remote attacker to execute arbitrary code.

Executive summary

Improper input validation within Microsoft Edge (Chromium-based) could enable an unauthenticated attacker to execute malicious code over the network.

Vulnerability

This vulnerability involves Improper Input Validation (CWE-20), where the application fails to verify the integrity of data received from an external source. An unauthenticated attacker can exploit this weakness to manipulate browser processes and achieve unauthorized code execution.

Business impact

This vulnerability carries a CVSS score of 7.6, indicating a significant risk to business operations and data confidentiality. Exploitation could lead to unauthorized access to internal resources or the compromise of endpoints, potentially resulting in severe operational disruption or loss of sensitive proprietary data.

Remediation

Immediate Action: Update Microsoft Edge to version 150.0.4078.48 or later to ensure that input validation mechanisms are properly enforced.

Proactive Monitoring: Audit browser logs and network egress traffic for evidence of unexpected input patterns or unauthorized remote interactions.

Compensating Controls: Implement strict Web Application Firewall (WAF) rules or browser-based security configurations to mitigate the risk of malicious payload delivery.

Exploitation status

Public Exploit Available: false

Analyst recommendation

The vulnerability poses a clear threat to system integrity through improper input handling. Organizations should treat this as a high-priority update and ensure all affected browser installations are patched to the latest version to prevent exploitation.