EUVD-2026-73305
GHSA-jc6c-35qx-5h7p
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Document delivered over network with no attacker auth required, but victim must open the file (UI:R); read-only memory leak yields C:H with zero integrity or availability impact and no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read (CWE-125) in Microsoft Word's document-parsing engine enables remote information disclosure across Microsoft 365 Apps, Office 2019, 2021, and 2024 LTSC on both Windows and macOS. An unauthenticated remote attacker (per CVSS PR:N) can cause Word to read beyond an allocated buffer when a victim opens a crafted document, potentially leaking sensitive memory contents to an attacker-controlled endpoint. …
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 victim to open or preview a specially crafted Word document using an unpatched version of Microsoft Word - user interaction is mandatory (CVSS UI:R) and the attack cannot succeed without the victim taking this action. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 Medium score reflects a network-reachable attack requiring no attacker privileges but mandating victim file-open interaction, which SSVC confirms limits automation potential (Automatable: no). … 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 vendor-released patches via Microsoft Update, Windows Update for Business, or the Microsoft 365 admin center. … Detailed patch versions, workarounds, and compensating controls in full report. |
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-125 – Out-of-bounds Read
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today