EUVD-2026-73714
GHSA-h28w-mr99-5g86
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-based delivery over network with no privileges required and one user interaction; full impact on vulnerable system with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Stack-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
AnalysisAI
Stack-based buffer overflow in Microsoft Access enables remote code execution when a user opens a specially crafted database file, delivering full confidentiality, integrity, and availability compromise on the vulnerable host. Affected products span all current Microsoft Office release trains - Access 2016, Office 2019, Office LTSC 2021, Office LTSC 2024, and Microsoft 365 Apps for Enterprise - representing a broad enterprise attack surface. …
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 the target user to open a specially crafted Access database file (.accdb or .mdb) - this is the sole prerequisite reflected in UI:R of the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score (AV:N/AC:L/PR:N/UI:R) accurately reflects a classic document-based delivery scenario: the overflow is triggered by opening a malicious file, requiring one click of user interaction, but no authentication and no special configuration. … 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 Microsoft's released patches immediately via Windows Update, Microsoft Update Catalog, or enterprise deployment tools (WSUS, Intune, MECM): Access 2016 to 16.0.5569.1002 or later, Office 2019 to 16.0.10417.20207 or later, Office LTSC 2021 to 16.0.14334.20906 or later, Office LTSC 2024 to 16.0.17932.20976 or later, and Microsoft 365 Apps for Enterprise to 16.0.20326.20138 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all systems running Microsoft Access 2016, Office 2019, Office LTSC 2021, LTSC 2024, or Microsoft 365 Apps for Enterprise in your inventory; pull current patch levels and enable Windows Update alerts. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Microsoft Outlook Remote Code Execution Vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotel
Microsoft Excel Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authenti
Microsoft Publisher Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.3), this vulnerability is low att
Microsoft Office contains a security feature bypass (CVE-2026-21509, CVSS 7.8) where reliance on untrusted inputs in sec
Microsoft Office Word contains a security decision bypass (CVE-2026-21514, CVSS 7.8) through reliance on untrusted input
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vu
Microsoft Office Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentic
Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentica
Use-after-free vulnerability in Microsoft Office Word that allows local, unauthenticated attackers to execute arbitrary
Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely expl
Microsoft Office Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack
A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle obje
Same weakness CWE-20 – Improper Input Validation
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today