EUVD-2026-73666
GHSA-f8h9-h9r6-77fr
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network service, no auth required, over-read yields C:H from process memory exposure; no write or crash path so I:N and A:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Buffer over-read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Buffer over-read in the Windows Message Queuing (MSMQ) Queue Manager allows remote, unauthenticated attackers to disclose arbitrary process memory contents across a broad spectrum of Windows desktop and server versions. The CWE-126 root cause means a crafted MSMQ network message causes the Queue Manager to read past its allocated buffer boundary, potentially returning heap or stack memory-including credentials, session tokens, or application secrets-in network responses. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-layer reachability to the target's MSMQ service on TCP port 1801 (and RPC endpoint mapper on TCP 135). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) scores 7.5 and reflects a remotely exploitable, unauthenticated information disclosure with no interaction required-an accurate characterization of an over-read in a network-facing service. … 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 | Microsoft has released cumulative security updates for all affected versions; administrators should apply the patches that advance each installation to the minimum safe build: Windows 11 24H2 to 10.0.26100.9445, Windows Server 2025 to 10.0.26100.33438, Windows 11 23H2 to 10.0.22631.7582, Windows Server 2022 to 10.0.20348.5622, Windows Server 2019 and Windows 10 1809 to 10.0.17763.9245, Windows Server 2016 and Windows 10 1607 to 10.0.14393.9512, Windows 10 21H2 to 10.0.19044.7725, Windows 10 22H2 to 10.0.19045.7725, Windows Server 2012 R2 to 6.3.9600.23397, and Windows Server 2012 to 6.2.9200.26349. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of Windows systems running MSMQ services (Windows Server 2012-2025, Windows 10-11) and confirm Microsoft patch availability; identify systems handling sensitive inter-process communications or authentication tokens as highest priority. …
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Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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