EUVD-2026-73086
GHSA-r4v9-m65q-8c8m
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File delivered over network (AV:N), no auth required (PR:N), victim must open file (UI:R), full code exec in user context (C/I/A:H, S:U).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Paint allows an unauthorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in Windows Paint (mspaint) enables remote code execution across virtually all supported Windows versions when a user opens a specially crafted image file. Reported by secure@microsoft.com and tracked as EUVD-2026-73086, this CWE-122 flaw carries a CVSS 8.8 with high impact across confidentiality, integrity, and availability, exploitable by unauthenticated attackers requiring only user interaction. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim open a specially crafted image file in Windows Paint - the attacker must deliver the file via any channel (email attachment, web download, SMB/UNC path, USB) and induce the user to open it with Paint specifically. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) correctly reflects the network-deliverable file-based exploitation model: no authentication and low complexity on the attacker side, with UI:R as the principal limiting factor requiring the victim to open a crafted file. … 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-released patch via Windows Update or the Microsoft Update Catalog, targeting the fixed builds listed in the EUVD-2026-73086 data (e.g., 10.0.26100.9445 for Windows 11 24H2, 10.0.19045.7725 for Windows 10 22H2, 10.0.17763.9245 for Windows Server 2019). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory systems running Windows Paint and prioritize patching for those most exposed to external image sources. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today