EUVD-2026-73424
GHSA-cx9c-5pc6-jx7c
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-accessible WER overflow requiring low-privilege auth and user interaction; successful exploitation yields full system privilege escalation (C:H/I:H/A:H).
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 over a network.
AnalysisAI
Privilege escalation to full system control is possible in Windows Error Reporting (WER) across a broad span of Microsoft Windows desktop and server releases. An authenticated, low-privileged attacker who can trigger user interaction can exploit a heap-based buffer overflow (CWE-122) over the network to achieve high confidentiality, integrity, and availability impact - effectively gaining elevated privileges on the target system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated (low-privilege) account on the target Windows system or network domain - anonymous unauthenticated access is not sufficient per the PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 score (AV:N/AC:L/PR:L/UI:R) reflects a network-exploitable, low-complexity privilege escalation that requires only a low-privilege authenticated account and some user interaction - a realistic attacker posture in any enterprise with authenticated remote workers or shared terminal services. … 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 updates corresponding to each affected Windows build as documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68894. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory Windows desktop and server deployments to identify systems running affected releases; flag domain-joined machines and member servers as higher priority. …
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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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