CVE-2026-58594
Summary
by MITRE • 07/14/2026
Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a network.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical integer overflow condition within the Remote Desktop Protocol implementation on windows systems that can be exploited by remote attackers to achieve arbitrary code execution. The flaw occurs when the rdp service processes certain data structures containing integer values that exceed their maximum representable range, causing the values to wrap around to negative or unexpected positive numbers. This type of vulnerability falls under the common weakness enumeration category CWE-190, which specifically addresses integer overflow conditions in software implementations.
The technical exploitation of this vulnerability typically involves crafting malicious rdp packets or connection parameters that trigger the integer wraparound behavior during protocol processing. When the vulnerable windows rdp service attempts to allocate memory or process data structures based on these corrupted integer values, it can lead to memory corruption that allows an attacker to overwrite critical program execution flow. The attack surface is particularly concerning as it operates over standard network protocols and requires no local privileges to initiate the exploitation sequence.
From an operational impact perspective, this vulnerability creates a significant risk for organizations relying on remote desktop services for legitimate business operations. Attackers can leverage this weakness to gain unauthorized access to systems running vulnerable versions of windows rdp implementations, potentially leading to full system compromise and lateral movement within network environments. The attack chain typically follows patterns consistent with the attack technique T1071.004 from the attack framework which covers application layer protocol usage for remote access.
The most effective mitigations involve applying microsoft security patches promptly, implementing network segmentation controls to limit rdp access, configuring strong authentication mechanisms including multi-factor authentication, and monitoring for unusual rdp connection patterns that might indicate exploitation attempts. Organizations should also consider disabling unnecessary rdp services and implementing strict firewall rules limiting access to rdp ports only from trusted networks. Additionally, regular vulnerability assessments and penetration testing can help identify systems running vulnerable versions of the rdp service before they can be exploited in real-world attacks. The remediation process should prioritize patch management across all windows systems that expose rdp services to external networks while maintaining proper configuration management practices to prevent similar vulnerabilities from arising in future implementations.