Virtual Hard Disk (VHDX) Remote Code Execution Vulnerability
Integer overflow or wraparound in Virtual Hard Disk (VHDX) allows an unauthorized attacker to execute code locally.
MSRC compact vulnerability detail
CVE-2025-49683 · Microsoft Virtual Hard Disk Remote Code Execution Vulnerability
Integer overflow or wraparound in Virtual Hard Disk (VHDX) allows an unauthorized attacker to execute code locally.
Signals
Virtual Hard Disk (VHDX)
Remote Code Execution
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Unlikely
CWE
Patch Diff
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Resolved binary override
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Description
Integer overflow or wraparound in Virtual Hard Disk (VHDX) allows an unauthorized attacker to execute code locally.
FAQ / Articles
FAQ
According to the CVSS metric, the attack vector is local (AV:L) while user interaction is required (UI:R). What does that mean for this vulnerability? An attacker can trick a local user on a vulnerable system into mounting a specially crafted VHD that would then trigger the vulnerability.
FAQ
Why could an attacker achieve remote code execution on affected versions of Window Server 2008, but only cause denial of service on systems running Window Server 2008 R2 or newer versions of Windows? In Windows 7 and newer, an existing mechanism prevents an attacker from achieving remote code execution. They could only use this vulnerability to cause denial of service.