CVSS 3.1
7.3 highCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HCVE-2026-120778 Aspire Elevation of Privilege Vulnerability
High (7.3) in microsoft aspire.cli. EPSS 0.4% estimated probability of exploitation activity in the next 30 days. Fixed in Aspire.Cli 13.6.5.
On this page
Creation of temporary file in directory with insecure permissions in .NET Aspire allows an authorized attacker to elevate privileges locally.
Severity
- EPSS
- 0.4% estimated probability of exploitation activity in the next 30 days; 39th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-379 Creation of Temporary File in Directory with Insecure Permissions
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-120778 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-120778?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-120778?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-120778 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-120778)
HTML:
<a href="https://cve.bz/cve/CVE-2026-120778"><img src="https://cve.bz/cve/badge/CVE-2026-120778.svg" alt="CVE-2026-120778"></a>
Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft Aspire.Cli | from 13.5.4 before 13.6.5 |
Fix and patched versions
Aspire.Cli(NuGet): fixed in 13.6.5Aspire.Cli.linux-x64(NuGet): fixed in 13.6.5Aspire.Cli.linux-arm64(NuGet): fixed in 13.6.5Aspire.Cli.linux-musl-x64(NuGet): fixed in 13.6.5Aspire.Cli.osx-x64(NuGet): fixed in 13.6.5Aspire.Cli.osx-arm64(NuGet): fixed in 13.6.5@microsoft/aspire-cli(npm): fixed in 13.6.5@microsoft/aspire-cli-linux-x64(npm): fixed in 13.6.5
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli | >=13.2.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli.linux-x64 | >=13.3.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli.linux-arm64 | >=13.3.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli.linux-musl-x64 | >=13.3.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli.osx-x64 | >=13.3.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | NuGet | Aspire.Cli.osx-arm64 | >=13.3.0 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli | >=13.4.2 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli-linux-x64 | >=13.4.2 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli-linux-arm64 | >=13.4.2 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli-linux-musl-x64 | >=13.4.2 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli-osx-x64 | >=13.4.2 <13.6.5 | 13.6.5 |
| GHSA-m63f-xhvm-6mv5 | npm | @microsoft/aspire-cli-osx-arm64 | >=13.4.2 <13.6.5 | 13.6.5 |
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Ubuntu | 22.04:LTS | dotnet7 | no fix listed | UBUNTU-CVE-2026-120778 |
From the distributions' data via OSV.dev: Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Ubuntu.