EUVD-2026-73721
GHSA-4pxg-8538-m58j
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack delivered via network-hosted malicious file (AV:N), mandatory active user open (UI:R), non-trivial path exploitation conditions (AC:H); full C/I/A reflects complete workstation compromise post-privilege-escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
External control of file name or path in .NET allows an unauthorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in Microsoft .NET's diagnostic runtime allows a network-reachable unauthenticated attacker - contingent on user interaction - to gain elevated privileges by supplying an externally controlled file path (CWE-73). The vulnerable component is Microsoft.Diagnostics.Runtime, embedded in Visual Studio 2026 (18.9.x) and Visual Studio 2022 (17.14.x), making developer workstations the primary target. …
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 a user running Visual Studio 2026 18.9.x or Visual Studio 2022 17.14.x to actively open or process an attacker-supplied artifact such as a .NET diagnostic dump or crafted project file - user interaction (UI:R) is mandatory. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score reflects genuine severity potential: C:H/I:H/A:H indicates full system compromise once exploitation succeeds. … 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 | Update Visual Studio 2026 to version 18.9.3 or later and Visual Studio 2022 to version 17.14.40 or later via the Visual Studio Installer or Windows Update - both are confirmed fix versions per EUVD-sourced data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all installations of Visual Studio 2026 (18.9.x) and Visual Studio 2022 (17.14.x) across your development environment. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-73 – External Control of File Name or Path
View allShare
External POC / Exploit Code
Leaving vuln.today