EUVD-2026-73444
GHSA-fvfr-g3fw-7v7j
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local attack requires authenticated session (PR:L); read-only OOB flaw yields confidentiality impact only, no integrity or availability effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Out-of-bounds read in Push Message Routing Service allows an authorized attacker to disclose information locally.
AnalysisAI
Out-of-bounds read in the Windows Push Message Routing Service exposes process or kernel memory to a locally authenticated attacker, resulting in sensitive information disclosure. The vulnerability affects a wide range of Microsoft Windows releases spanning Windows 10 through Windows 11 and Windows Server 2016 through 2025, making patch surface substantial across enterprise environments. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated local user session on the affected Windows system - corresponding to CVSS PR:L (low privileges). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N scores 5.5 (Medium), which is proportionate for this class of vulnerability: local access with low privileges is required, there is no integrity or availability impact, but the confidentiality impact is rated High, reflecting the potential to leak meaningful memory contents. … 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 security update corresponding to each affected OS build, as listed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69303. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Information Disclosure
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External POC / Exploit Code
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