EUVD-2026-44023
GHSA-cfg6-hjhr-wr3x
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GDI+ parses attacker-supplied graphics locally with no privileges (AV:L/PR:N), but rendering realistically requires the victim to open/preview the file, so UI:R; memory corruption yields full C:H/I:H/A:H.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.
AnalysisAI
Local code execution in Microsoft Windows GDI+ (the graphics rendering component) via a heap-based buffer overflow (CWE-122), affecting a broad range of Windows client and server releases from Windows 10 1607 through Windows 11 26H1 and Server 2012 through Server 2025. Per the supplied CVSS vector (PR:N), an unauthorized attacker who gets the vulnerable component to process crafted graphics data can achieve high-impact code execution (C:H/I:H/A:H) on the local system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the Windows GDI+ library to parse attacker-controlled graphics data (a crafted image or EMF/WMF metafile with malformed size/length fields) on the local system; the CVSS vector's AV:L means the malicious content must reach a locally executing rendering process rather than being delivered over the network to a listening service. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor CVSS 3.1 base score is 8.4 (High) with vector AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - full CIA impact and low complexity with no privileges required, but a LOCAL attack vector. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious image or metafile with corrupted length/dimension fields and delivers it to a target host (staged on a share, embedded in a document, or dropped by a low-privileged process). When a local application invokes GDI+ to parse or render the file, the heap overflow corrupts adjacent heap structures and, after heap grooming, redirects execution to attacker-controlled code. … |
| Remediation | Patch available per vendor advisory: apply the Microsoft security update referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54122 for each affected SKU via Windows Update, WSUS, or your patch-management tooling; the input does not include exact fixed build numbers, so pull the per-SKU KB and build from the MSRC update guide. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, obtain the Microsoft security patch and identify systems actively processing graphics from untrusted sources. …
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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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