CVE-2026-120778 json
Aspire Elevation of Privilege Vulnerability
published yesterday modified 17h ago also EUVD-2026-122467 , GHSA-m63f-xhvm-6mv5
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
Creation of temporary file in directory with insecure permissions in .NET Aspire allows an authorized attacker to elevate privileges locally.
Patch / fix
- nuget Aspire.Cli 13.6.5
- nuget Aspire.Cli.linux-x64 13.6.5
- nuget Aspire.Cli.linux-arm64 13.6.5
- nuget Aspire.Cli.linux-musl-x64 13.6.5
- nuget Aspire.Cli.osx-x64 13.6.5
- nuget Aspire.Cli.osx-arm64 13.6.5
- npm @microsoft/aspire-cli 13.6.5
- npm @microsoft/aspire-cli-linux-x64 13.6.5
- npm @microsoft/aspire-cli-linux-arm64 13.6.5
- npm @microsoft/aspire-cli-linux-musl-x64 13.6.5
- npm @microsoft/aspire-cli-osx-x64 13.6.5
- npm @microsoft/aspire-cli-osx-arm64 13.6.5
- Microsoft Aspire.Cli 13.6.5
Is CVE-2026-120778 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Aspire.Cli | >=13.2.0, <13.6.5 |
13.6.5 |
| nuget | Aspire.Cli.linux-x64 | >=13.3.0, <13.6.5 |
13.6.5 |
| nuget | Aspire.Cli.linux-arm64 | >=13.3.0, <13.6.5 |
13.6.5 |
| nuget | Aspire.Cli.linux-musl-x64 | >=13.3.0, <13.6.5 |
13.6.5 |
| nuget | Aspire.Cli.osx-x64 | >=13.3.0, <13.6.5 |
13.6.5 |
| nuget | Aspire.Cli.osx-arm64 | >=13.3.0, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli | >=13.4.2, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli-linux-x64 | >=13.4.2, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli-linux-arm64 | >=13.4.2, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli-linux-musl-x64 | >=13.4.2, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli-osx-x64 | >=13.4.2, <13.6.5 |
13.6.5 |
| npm | @microsoft/aspire-cli-osx-arm64 | >=13.4.2, <13.6.5 |
13.6.5 |
Affected products
- Microsoft Aspire.Cli
Classification
- Weakness
-
- CWE-379 Creation of Temporary File in Directory with Insecure Permissions
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-120778
vendor-advisory, patch, web
-
github.com
/microsoft/aspire/pull/22071
web
-
github.com
/microsoft/aspire/commit/1ecd7cc70b5a5a5b8571fe3af69faa1646b8de47
web
-
github.com
/microsoft/aspire/security/advisories/GHSA-m63f-xhvm-6mv5
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-120778
advisory
-
github.com
/dotnet/announcements/issues/519
web
-
github.com
/microsoft/aspire/issues/22101
web
-
github.com
/microsoft/aspire
package
-
github.com
/microsoft/aspire/releases/tag/v13.6.5
web
Sources
- CVE List CVE-2026-120778
- GitHub Advisory GHSA-m63f-xhvm-6mv5
- NVD CVE-2026-120778
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.