CVE-2026-114148: ASP.NET Core Elevation of Privilege Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.
Description quoted from the CVE record (assigned by microsoft, published 2026-10-29).
Weakness: CWE-276: Incorrect Default Permissions
How it can be exploited
Exploitable with local access with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer evidence for this CVE has not been fetched yet.
Live scores
- EPSS
- 0.004
low predicted chance of attack - VEDAS
- 0.046
little exploit evidence - On CISA KEV
- Not listed
- Detection rule
- None yet
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Microsoft .NET 10.0 installed on Linux | from 10.0.0 before 10.0.403 | Not stated |
| Microsoft .NET 10.0 installed on Mac OS | from 10.0.0 before 10.0.403 | Not stated |
| Microsoft .NET 10.0 installed on Windows | from 10.0.0 before 10.0.403 | Not stated |
| Microsoft .NET 11.0 installed on Linux | from 11.0.0-preview.1 before 11.0.100-rc.3 | Not stated |
| Microsoft .NET 11.0 installed on Mac OS | from 11.0.0-preview.1 before 11.0.100-rc.3 | Not stated |
| Microsoft .NET 11.0 installed on Windows | from 11.0.0-preview.1 before 11.0.100-rc.3 | Not stated |
| Microsoft .NET 8.0 installed on Linux | from 8.0.0 before 8.0.427 | Not stated |
| Microsoft .NET 8.0 installed on Mac OS | from 8.0.0 before 8.0.427 | Not stated |
| Microsoft .NET 8.0 installed on Windows | from 8.0.0 before 8.0.427 | Not stated |
| Microsoft .NET 9.0 installed on Linux | from 9.0.0 before 9.0.320 | Not stated |
| Microsoft .NET 9.0 installed on Mac OS | from 9.0.0 before 9.0.320 | Not stated |
| Microsoft .NET 9.0 installed on Windows | from 9.0.0 before 9.0.320 | Not stated |
| Microsoft .NET source-build Linux tarballs (all archive types) | from 8.0.100 before 10.0.403-servicing.26523.112 | Not stated |
| Microsoft ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published) | from 8.0.0 before 9.0.22 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
Fixed versions stated in the CVE record: 10.0.403, 11.0.100-rc.3, 8.0.427, 9.0.320, 10.0.403-servicing.26523.112, 9.0.22.
Vendor guidance:
- ASP.NET Core Elevation of Privilege Vulnerability (vendor-advisory, patch)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- .NET out-of-band update (CVE-2026-70197, CVE-2026-102870, CVE-2026-114148): the 13 October fixes were incomplete (full advisory)
- .NET: out-of-band update re-fixes October flaws and a tarball privilege bug (CVE-2026-114148, CVE-2026-70197, CVE-2026-102870) (25 Oct 2026)
References
Vendor advisories and patches
- ASP.NET Core Elevation of Privilege Vulnerability (vendor-advisory, patch)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS). Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.