EUVD-2026-73833
GHSA-jvmf-pfmx-j4qj
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
File delivered over network (AV:N), no special conditions (AC:L), user must open file (UI:R), read-only impact so I:N/A:N.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
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 exposes arbitrary memory contents to a remote unauthenticated attacker who can convince a user to open a malicious file, resulting in high-confidence information disclosure. Affected versions span Microsoft Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and their macOS equivalents. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a user on a vulnerable Microsoft Office build opens a specially crafted document received from an attacker-controlled source. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 Medium score reflects a meaningful but constrained risk profile: network delivery is trivial (AV:N/AC:L/PR:N), but user interaction is mandatory (UI:R), which blocks automated, wormable 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 | Apply the Microsoft security update released for this vulnerability via the standard Microsoft Update channel or Microsoft Deployment Toolkit. … 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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