EUVD-2026-73243
GHSA-cx66-f5c9-xfw4
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-borne network delivery (AV:N), no special prerequisites (AC:L), no attacker credentials needed (PR:N), victim must open the file (UI:R), full impact on the compromised host with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
AnalysisAI
Use-after-free in Microsoft Office PowerPoint enables remote code execution when a victim opens a specially crafted PowerPoint document. The vulnerability affects PowerPoint 2016, 2019, Office LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Office for Mac across multiple build versions, spanning virtually the entire active Office install base. …
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 | The victim must open a specially crafted PowerPoint file (.ppt, .pptx, or related format) in an unpatched version of Microsoft Office PowerPoint - this is the sole required condition (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score with vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H accurately reflects the threat model: a network-delivered malicious document requiring only that the victim open it, with no authentication requirement on the attacker's side, yielding full C/I/A compromise. … 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 immediately through Windows Update, Microsoft Update Catalog, or the Microsoft 365 Admin Center. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, retrieve Microsoft vendor patches for all affected PowerPoint versions and stage them for deployment via Windows Update or WSUS; immediately patch executive and finance workstations as priority targets. …
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-416 – Use After Free
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today