CVE-2026-58532
Summary
by MITRE • 07/14/2026
Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical integer overflow condition within the windows kernel that enables authenticated local attackers to escalate their privileges from standard user level to system level access. The flaw occurs when the kernel processes certain integer operations that exceed their maximum representable values, causing the counter to wrap around to zero or negative values. This type of vulnerability falls under the common weakness enumeration CWE-190 which specifically addresses integer overflow conditions that can lead to unpredictable behavior and security implications.
The technical implementation involves kernel components that handle memory management, process scheduling, or privilege checking mechanisms where integer variables are used to track resource limits, buffer sizes, or access control parameters. When these integers overflow during legitimate operations, the system may allocate insufficient memory, bypass access controls, or create unexpected execution paths that malicious code can exploit. The vulnerability requires local authentication since an attacker must first establish a valid user session before attempting privilege escalation.
From an operational perspective this flaw presents a significant risk to enterprise environments where multiple users share systems with varying privilege levels. Attackers can leverage the integer overflow to manipulate kernel data structures, potentially gaining access to protected memory regions or executing arbitrary code with system-level privileges. The impact extends beyond individual system compromise as successful exploitation could enable lateral movement within networks or provide attackers with persistent access to critical infrastructure components.
Security professionals should implement immediate mitigations including applying microsoft security patches and updates that address the specific integer overflow conditions in kernel components. Additional protective measures include implementing least privilege principles, monitoring for anomalous kernel behavior, and deploying endpoint detection and response solutions that can identify exploitation attempts. The vulnerability aligns with attack techniques described in the attack pattern taxonomy under privilege escalation methods and requires careful attention to prevent unauthorized system access.
The root cause analysis reveals that this integer overflow stems from inadequate input validation within kernel routines that process user-supplied data or perform calculations without proper bounds checking. Modern development practices should incorporate static code analysis tools that can detect potential integer overflows, along with runtime protections such as address space layout randomization and control flow integrity mechanisms. Organizations must also maintain comprehensive patch management processes to ensure timely deployment of security updates addressing kernel-level vulnerabilities that could enable system compromise through privilege escalation attacks.
Mitigation strategies should extend beyond simple patching to include comprehensive system hardening measures that reduce the attack surface available to exploited vulnerabilities. Network segmentation, user access controls, and regular security audits help minimize potential impact from successful exploitation attempts. The vulnerability demonstrates the critical importance of robust integer handling in kernel space operations and highlights the need for continuous security testing of core operating system components that handle privilege transitions and resource management functions.