EUVD-2026-73028
GHSA-fh5x-p9gr-q6fx
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local vector with low-privilege auth required; AC:H reflects UAF race condition; full C/I/A impact reflects SYSTEM-level execution post-exploit.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
AnalysisAI
Use-after-free (CWE-416) in Windows Message Queuing (MSMQ) allows a locally authenticated low-privileged attacker to escalate privileges to a higher integrity level on affected Windows systems. The vulnerability spans a wide range of Windows releases from Server 2012 through Windows 11 26H1, and Microsoft has released patches across all affected build lines. …
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 a locally authenticated account with at minimum low-level privileges (standard user or service account) on the target Windows system. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate-to-high for environments where MSMQ is actively deployed. … 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 corresponding to the installed Windows version - specific fixed build numbers are listed per-product in the EUVD-2026-73028 advisory and the MSRC update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69645. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems running MSMQ services across your environment, including Windows Server 2012 through Windows 11 26H1. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today