EUVD-2026-56677
GHSA-89jx-4r2g-hggf
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network delivery via crafted image requires no privileges; user must open or preview the file (UI:R); full C/I/A impact from successful heap overflow exploitation with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows GDI+ allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution is possible in Windows GDI+ across a broad range of Windows 10, 11, and Windows Server versions due to an integer overflow that leads to a heap-based buffer overflow (CWE-122). Network-based attackers with no privileges required can exploit this by delivering a crafted image or graphic file, requiring only that the victim open or preview the content. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim user open or preview a crafted file processed by Windows GDI+ - such as a malformed JPEG, PNG, BMP, EMF, or WMF graphic - delivered via email, web download, or shared storage. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects high real-world risk: low attack complexity, no authentication required, and full confidentiality, integrity, and availability impact upon successful exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update via Windows Update or WSUS as detailed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62822. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Windows 10, 11, and Windows Server systems in production and classify by business criticality. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Heap Overflow
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External POC / Exploit Code
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