EUVD-2026-73158
GHSA-9hj9-37wq-cwf7
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Desktop Office parsing flaws overwhelmingly require file open or preview (UI:R); other metrics match vendor rating; no integrity or availability impact.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
8DescriptionNVD
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in Microsoft Office (2016 through 365 Apps for Enterprise and LTSC 2024) enables an unauthenticated remote attacker to disclose sensitive memory contents over a network, per the provided CVSS vector. Affected products span both perpetual-license and subscription editions across x64 and x86 architectures. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Per the provided CVSS vector (AV:N/AC:L/PR:N/UI:N), exploitation is rated as requiring no authentication and no user interaction, which is atypical for a desktop Office parsing vulnerability and should be independently verified against the MSRC advisory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N = 7.5) rates this as High severity, with network-accessible, unauthenticated, zero-interaction exploitation. … 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 | Vendor-released patch is available across all affected product lines via Microsoft's standard update mechanism. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Microsoft Office deployments, including Office 2016, 365 Apps for Enterprise, and LTSC 2024 installations across both x64 and x86 architectures. …
Sign in for detailed remediation steps and compensating controls.
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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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