EUVD-2026-73360
GHSA-cjmr-wjf2-6x7r
Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Local low-privileged access suffices; no special conditions; scope change to WER service yields full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in Windows Error Reporting (WER) allows a low-privileged local attacker to escalate privileges to SYSTEM on affected Windows endpoints and servers. The CVSS scope change flag (S:C) indicates the exploit escapes the attacker's process boundary, achieving full C:H/I:H/A:H impact on the broader system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have an authenticated local session on the target Windows system with at minimum low-privileged (standard user) access - PR:L per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score with AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H accurately reflects a high-severity local privilege escalation. … 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 that brings each affected Windows installation to or above the fixed build versions listed in the EUVD-2026-73360 advisory: Windows 10 1607/Server 2016 to 10.0.14393.9512 or later, Windows 10 1809/Server 2019 to 10.0.17763.9245 or later, Windows 10 21H2 to 10.0.19044.7725 or later, Windows 10 22H2 to 10.0.19045.7725 or later, Windows 11 23H2 to 10.0.22631.7582 or later, Windows 11 24H2/Server 2025 to 10.0.26100.9445 or later (server build 10.0.26100.33438), Windows 11 25H2 to 10.0.26200.9445 or later, Windows 11 26H1 to 10.0.28000.2954 or later, Server 2022 to 10.0.20348.5622 or later, Server 2012 to 6.2.9200.26349 or later, and Server 2012 R2 to 6.3.9600.23397 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows systems in the environment and categorize by criticality and data sensitivity. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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