Microsoft .NET Aspire: Elevation of Privilege via Insecure Temporary File Permissions (CVE-2026-120778)
An elevation of privilege vulnerability in .NET Aspire CLI (CVE-2026-120778) exists due to the creation of temporary files in directories with insecure permissions. This advisory is a duplicate of GHSA-m63f-xhvm-6mv5.
CVE search metadata
CVE search record: CVE-2026-120778. Severity: high. CVSS: 7.3. KEV: no. Product: Aspire.Cli (>= 13.2.0, < 13.6.5). Brief: Microsoft .NET Aspire: Elevation of Privilege via Insecure Temporary File Permissions (CVE-2026-120778). Brief link: https://feed.craftedsignal.io/briefs/2026-11-aspire-eop/
Triage facts
Revision 1- Applicability
- Aspire.Cli (>= 13.2.0, < 13.6.5)
- Evidence
- Unknown
- Severity
- High
- Sources
- 3 public sources
- Freshness
- Revision 1Nov 11, 01:54 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- B2Roughly even chance
The .NET Aspire CLI (affected versions: >= 13.2.0, < 13.6.5) creates temporary files in directories with insecure permissions, which allows a local attacker to elevate privileges. This advisory has been withdrawn as a duplicate of GHSA-m63f-xhvm-6mv5.