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Fencer Vulns
high 7.8

CVE-2026-114148 json

ASP.NET Core Elevation of Privilege Vulnerability

published 2026-10-29 11 d ago modified 2026-10-31 8 d ago also EUVD-2026-113163

cvss
7.8
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 29%
public exploits
0
none known

Summary

Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.

Patch / fix

  • Microsoft .NET 10.0 installed on Linux 10.0.403
  • Microsoft .NET 10.0 installed on Mac OS 10.0.403
  • Microsoft .NET 10.0 installed on Windows 10.0.403
  • Microsoft .NET 11.0 installed on Linux 11.0.100-rc.3
  • Microsoft .NET 11.0 installed on Mac OS 11.0.100-rc.3
  • Microsoft .NET 11.0 installed on Windows 11.0.100-rc.3
  • Microsoft .NET 8.0 installed on Linux 8.0.427
  • Microsoft .NET 8.0 installed on Mac OS 8.0.427
  • Microsoft .NET 8.0 installed on Windows 8.0.427
  • Microsoft .NET 9.0 installed on Linux 9.0.320
  • Microsoft .NET 9.0 installed on Mac OS 9.0.320
  • Microsoft .NET 9.0 installed on Windows 9.0.320
  • Microsoft .NET source-build Linux tarballs (all archive types) 10.0.403-servicing.26523.112
  • Microsoft ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published) 9.0.22
  • dotnet8 Ubuntu 22.04 LTS 8.0.133-8.0.33-0ubuntu1~22.04.1
  • dotnet8 Ubuntu 24.04 LTS 8.0.133-8.0.33-0ubuntu1~24.04.1
  • dotnet10 Ubuntu 24.04 LTS 10.0.114-10.0.14-0ubuntu1~24.04.1
  • dotnet10 Ubuntu 26.10 10.0.114-10.0.14-0ubuntu1~26.10.1
  • dotnet10 Ubuntu 26.04 LTS 10.0.114-10.0.14-0ubuntu1~26.04.1
  • dotnet11 Ubuntu 26.10 11.0.100-11.0.0~rc3-0ubuntu1~26.10.1

ubuntu advisories UBUNTU-CVE-2026-114148

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • dotnet-sdk-8.0 AlmaLinux 8 8.0.133-1.el8_10
  • dotnet-hostfxr-8.0 AlmaLinux 8 8.0.33-1.el8_10
  • dotnet-runtime-8.0 AlmaLinux 8 8.0.33-1.el8_10
  • dotnet-sdk-dbg-8.0 AlmaLinux 8 8.0.133-1.el8_10
  • dotnet-templates-8.0 AlmaLinux 8 8.0.133-1.el8_10
  • aspnetcore-runtime-8.0 AlmaLinux 8 8.0.33-1.el8_10
  • dotnet-runtime-dbg-8.0 AlmaLinux 8 8.0.33-1.el8_10
  • dotnet-apphost-pack-8.0 AlmaLinux 8 8.0.33-1.el8_10

almalinux advisories ALSA-2026:92420ALSA-2026:92427ALSA-2026:92428ALSA-2026:92429ALSA-2026:92430ALSA-2026:92431

  • dotnet9.0 Rocky Linux 10 9.0.123-1.el10_2
  • dotnet9.0 Rocky Linux 9 9.0.123-1.el9_8
  • dotnet10.0 Rocky Linux 9 10.0.114-1.el9_8
  • dotnet8.0 Rocky Linux 9 8.0.133-1.el9_8
  • dotnet8.0 Rocky Linux 10 8.0.133-1.el10_2
  • dotnet10.0 Rocky Linux 10 10.0.114-1.el10_2
  • dotnet8.0 Rocky Linux 8 8.0.133-1.el8_10
  • dotnet9.0 Rocky Linux 8 9.0.123-1.el8_10

rocky linux advisories RLSA-2026:92430RLSA-2026:92429RLSA-2026:92432RLSA-2026:92492RLSA-2026:92428RLSA-2026:92438

  • dotnet8-runtime Alpine 3.24, Alpine 3.23, Alpine 3.22 8.0.33-r0
  • dotnet9-runtime Alpine 3.24, Alpine 3.23, Alpine 3.22 9.0.22-r0
  • dotnet10-runtime Alpine 3.24 10.0.14-r0

alpine advisories ALPINE-CVE-2026-114148

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-114148 updated cvss 7.8

dotnet8.0: dotnet9.0: dotnet11.0: dotnet10.0: ASP.NET Core Elevation of Privilege Vulnerability

  • Red Hat Enterprise Linux 9 dotnet11.0 Red Hat Enterprise Linux 10 dotnet11.0
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-8.0-source-built-artifacts 8.0.133-1.el9_6, dotnet-sdk-9.0-source-built-artifacts 9.0.123-1.el9_6
    fixed: vendor fix RHSA-2026:93457
  • Red Hat Enterprise Linux AppStream (v. 8) dotnet8.0 8.0.133-1.el8_10, dotnet9.0 9.0.123-1.el8_10, dotnet10.0 10.0.114-1.el8_10, dotnet-sdk-8.0 8.0.133-1.el8_10, dotnet-sdk-9.0 9.0.123-1.el8_10, dotnet-sdk-10.0 10.0.114-1.el8_10, +48 more
    fixed: vendor fix RHSA-2026:92431
  • Red Hat Enterprise Linux AppStream (v. 9) dotnet8.0 8.0.133-1.el9_8, dotnet9.0 9.0.123-1.el9_8, dotnet-host 10.0.14-1.el9_8, dotnet10.0 10.0.114-1.el9_8, dotnet-sdk-8.0 8.0.133-1.el9_8, dotnet-sdk-9.0 9.0.123-1.el9_8, +34 more
    fixed: vendor fix RHSA-2026:92432
  • Red Hat Enterprise Linux AppStream (v. 10) dotnet8.0 8.0.133-1.el10_2, dotnet9.0 9.0.123-1.el10_2, dotnet-host 10.0.14-1.el10_2, dotnet10.0 10.0.114-1.el10_2, dotnet-sdk-8.0 8.0.133-1.el10_2, dotnet-sdk-9.0 9.0.123-1.el10_2, +34 more
    fixed: vendor fix RHSA-2026:92438
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) dotnet8.0 8.0.133-1.el9_4, dotnet-host 8.0.33-1.el9_4, dotnet-sdk-8.0 8.0.133-1.el9_4, dotnet-hostfxr-8.0 8.0.33-1.el9_4, dotnet-runtime-8.0 8.0.33-1.el9_4, dotnet-sdk-dbg-8.0 8.0.133-1.el9_4, +8 more
    fixed: vendor fix RHSA-2026:93456
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) dotnet8.0 8.0.133-1.el10_0, dotnet9.0 9.0.123-1.el10_0, dotnet-host 9.0.22-1.el10_0, dotnet-sdk-8.0 8.0.133-1.el10_0, dotnet-sdk-9.0 9.0.123-1.el10_0, dotnet-hostfxr-8.0 8.0.33-1.el10_0, +21 more
    fixed: vendor fix RHSA-2026:93455
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) dotnet8.0 8.0.133-1.el9_6, dotnet9.0 9.0.123-1.el9_6, dotnet-host 9.0.22-1.el9_6, dotnet-sdk-8.0 8.0.133-1.el9_6, dotnet-sdk-9.0 9.0.123-1.el9_6, dotnet-hostfxr-8.0 8.0.33-1.el9_6, +21 more
    fixed: vendor fix RHSA-2026:93457
show 6 more
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts 8.0.133-1.el9_8, dotnet-sdk-9.0-source-built-artifacts 9.0.123-1.el9_8, dotnet-sdk-10.0-source-built-artifacts 10.0.114-1.el9_8
    fixed: vendor fix RHSA-2026:92432
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts 8.0.133-1.el10_2, dotnet-sdk-9.0-source-built-artifacts 9.0.123-1.el10_2, dotnet-sdk-10.0-source-built-artifacts 10.0.114-1.el10_2
    fixed: vendor fix RHSA-2026:92438
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-8.0-source-built-artifacts 8.0.133-1.el10_0, dotnet-sdk-9.0-source-built-artifacts 9.0.123-1.el10_0
    fixed: vendor fix RHSA-2026:93455
  • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-8.0-source-built-artifacts 8.0.133-1.el8_10, dotnet-sdk-9.0-source-built-artifacts 9.0.123-1.el8_10, dotnet-sdk-10.0-source-built-artifacts 10.0.114-1.el8_10, dotnet-sdk-11.0-source-built-artifacts 11.0.100~rc.3.26522.148-0.12.el8_10
    fixed: vendor fix RHSA-2026:92431
  • Red Hat Hardened Images dotnet8.0 8.0.133-0.1.hum1, dotnet-sdk-8.0 8.0.133-0.1.hum1, dotnet-sdk-dbg-8.0 8.0.133-0.1.hum1, dotnet-templates-8.0 8.0.133-0.1.hum1, dotnet-sdk-8.0-source-built-artifacts 8.0.133-0.1.hum1
    fixed: vendor fix RHSA-2026:91709
  • Red Hat Hardened Images dotnet10.0 10.0.113-1.hum1, dotnet9.0 9.0.122-0.1.hum1, dotnet-hostfxr-8.0 8.0.33-0.1.hum1, dotnet-runtime-8.0 8.0.33-0.1.hum1, aspnetcore-runtime-8.0 8.0.33-0.1.hum1, dotnet-runtime-dbg-8.0 8.0.33-0.1.hum1, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
10 d ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 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
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft .NET 10.0 installed on Linux
  • Microsoft .NET 10.0 installed on Mac OS
  • Microsoft .NET 10.0 installed on Windows
  • Microsoft .NET 11.0 installed on Linux
  • Microsoft .NET 11.0 installed on Mac OS
  • Microsoft .NET 11.0 installed on Windows
  • Microsoft .NET 8.0 installed on Linux
  • Microsoft .NET 8.0 installed on Mac OS
  • Microsoft .NET 8.0 installed on Windows
  • Microsoft .NET 9.0 installed on Linux
  • Microsoft .NET 9.0 installed on Mac OS
  • Microsoft .NET 9.0 installed on Windows
  • Microsoft .NET source-build Linux tarballs (all archive types)
  • Microsoft ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published)

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

References

Sources

Fencer Vulns 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.