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Fencer Vulns
high 7.0

CVE-2026-69806 json

.NET Elevation of Privilege Vulnerability

published 2026-09-08 2 mo ago modified 2026-10-31 8 d ago also BIT-dotnet-2026-69806 , BIT-dotnet-sdk-2026-69806 , EUVD-2026-73918

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate privileges locally.

Patch / fix

  • bitnami dotnet 9.0.20, 10.0.12
  • bitnami dotnet-sdk 9.0.20, 10.0.12
  • Microsoft .NET 10.0 runtime 10.0.12
  • Microsoft .NET 11.0 runtime 11.0 RC1
  • Microsoft .NET 9.0 runtime 9.0.20
  • Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.40
  • Microsoft Microsoft Visual Studio 2026 version 18.9 18.9.3
  • dotnet10 Ubuntu 24.04 LTS 10.0.112-10.0.12-0ubuntu1~24.04.1
  • dotnet10 Ubuntu 26.04 LTS 10.0.112-10.0.12-0ubuntu1~26.04.1

ubuntu advisories UBUNTU-CVE-2026-69806

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

  • dotnet10.0 hummingbird 1 10.0.112-1.hum1
  • dotnet-sdk-10.0 hummingbird 1 10.0.112-1.hum1
  • dotnet-sdk-aot-10.0 hummingbird 1 10.0.112-1.hum1
  • dotnet-sdk-dbg-10.0 hummingbird 1 10.0.112-1.hum1
  • dotnet-templates-10.0 hummingbird 1 10.0.112-1.hum1
  • dotnet-sdk-10.0-source-built-artifacts hummingbird 1 10.0.112-1.hum1
  • dotnet RHEL 8 10.0.112-1.el8_10
  • dotnet10.0 RHEL 8 10.0.112-1.el8_10

red hat advisories RHSA-2026:66863RHSA-2026:68676RHSA-2026:68233RHSA-2026:67614RHSA-2026:67613RHSA-2026:67528

  • dotnet AlmaLinux 8 10.0.112-1.el8_10
  • dotnet-host AlmaLinux 8 10.0.12-1.el8_10
  • dotnet-sdk-10.0 AlmaLinux 8 10.0.112-1.el8_10
  • dotnet-hostfxr-10.0 AlmaLinux 8 10.0.12-1.el8_10
  • dotnet-runtime-10.0 AlmaLinux 8 10.0.12-1.el8_10
  • dotnet-sdk-aot-10.0 AlmaLinux 8 10.0.112-1.el8_10
  • dotnet-sdk-dbg-10.0 AlmaLinux 8 10.0.112-1.el8_10
  • dotnet-templates-10.0 AlmaLinux 8 10.0.112-1.el8_10

almalinux advisories ALSA-2026:68676ALSA-2026:68233ALSA-2026:67528ALSA-2026:67530ALSA-2026:67613ALSA-2026:67614

  • dotnet10.0 Rocky Linux 8 10.0.112-1.el8_10
  • dotnet9.0 Rocky Linux 8 9.0.121-1.el8_10
  • dotnet9.0 Rocky Linux 10 9.0.121-1.el10_2
  • dotnet10.0 Rocky Linux 10 10.0.112-1.el10_2
  • dotnet10.0 Rocky Linux 9 10.0.112-1.el9_8
  • dotnet9.0 Rocky Linux 9 9.0.121-1.el9_8

rocky linux advisories RLSA-2026:68676RLSA-2026:68233RLSA-2026:67528RLSA-2026:67530RLSA-2026:67613RLSA-2026:67614

  • dotnet9-runtime Alpine 3.24, Alpine 3.23, Alpine 3.22 9.0.20-r0
  • dotnet10-runtime Alpine 3.23 10.0.13-r0
  • dotnet10-runtime Alpine 3.24 10.0.12-r0

alpine advisories ALPINE-CVE-2026-69806

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-2026-69806 updated cvss 7.0

dotnet10.0: dotnet9.0: .NET Elevation of Privilege Vulnerability

  • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-9.0-source-built-artifacts 9.0.122-1.el9_6
    fixed: vendor fix RHSA-2026:89735
  • Red Hat Enterprise Linux AppStream (v. 8) dotnet 10.0.112-1.el8_10, dotnet9.0 9.0.121-1.el8_10, dotnet-host 10.0.12-1.el8_10, dotnet10.0 10.0.112-1.el8_10, dotnet-sdk-9.0 9.0.121-1.el8_10, dotnet-sdk-10.0 10.0.112-1.el8_10, +23 more
    fixed: vendor fix RHSA-2026:68676
  • Red Hat Enterprise Linux AppStream (v. 9) dotnet9.0 9.0.121-1.el9_8, dotnet-host 10.0.12-1.el9_8, dotnet10.0 10.0.112-1.el9_8, dotnet-sdk-9.0 9.0.121-1.el9_8, dotnet-sdk-10.0 10.0.112-1.el9_8, dotnet-hostfxr-9.0 9.0.20-1.el9_8, +22 more
    fixed: vendor fix RHSA-2026:67613
  • Red Hat Enterprise Linux AppStream (v. 10) dotnet9.0 9.0.121-1.el10_2, dotnet-host 10.0.12-1.el10_2, dotnet10.0 10.0.112-1.el10_2, dotnet-sdk-9.0 9.0.121-1.el10_2, dotnet-sdk-10.0 10.0.112-1.el10_2, dotnet-hostfxr-9.0 9.0.20-1.el10_2, +22 more
    fixed: vendor fix RHSA-2026:67530
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) dotnet9.0 9.0.122-1.el10_0, dotnet-host 9.0.21-1.el10_0, dotnet-sdk-9.0 9.0.122-1.el10_0, dotnet-hostfxr-9.0 9.0.21-1.el10_0, dotnet-runtime-9.0 9.0.21-1.el10_0, dotnet-sdk-aot-9.0 9.0.122-1.el10_0, +9 more
    fixed: vendor fix RHSA-2026:88424
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) dotnet9.0 9.0.122-1.el9_6, dotnet-host 9.0.21-1.el9_6, dotnet-sdk-9.0 9.0.122-1.el9_6, dotnet-hostfxr-9.0 9.0.21-1.el9_6, dotnet-runtime-9.0 9.0.21-1.el9_6, dotnet-sdk-aot-9.0 9.0.122-1.el9_6, +9 more
    fixed: vendor fix RHSA-2026:89735
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-9.0-source-built-artifacts 9.0.121-1.el9_8, dotnet-sdk-10.0-source-built-artifacts 10.0.112-1.el9_8
    fixed: vendor fix RHSA-2026:67613
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-9.0-source-built-artifacts 9.0.121-1.el10_2, dotnet-sdk-10.0-source-built-artifacts 10.0.112-1.el10_2
    fixed: vendor fix RHSA-2026:67530
show 4 more
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-9.0-source-built-artifacts 9.0.122-1.el10_0
    fixed: vendor fix RHSA-2026:88424
  • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts 9.0.121-1.el8_10, dotnet-sdk-10.0-source-built-artifacts 10.0.112-1.el8_10
    fixed: vendor fix RHSA-2026:68676
  • Red Hat Hardened Images dotnet10.0 10.0.112-1.hum1, dotnet-sdk-10.0 10.0.112-1.hum1, dotnet-sdk-aot-10.0 10.0.112-1.hum1, dotnet-sdk-dbg-10.0 10.0.112-1.hum1, dotnet-templates-10.0 10.0.112-1.hum1, dotnet-sdk-10.0-source-built-artifacts 10.0.112-1.hum1
    fixed: vendor fix RHSA-2026:66863
  • Red Hat Hardened Images dotnet9.0, dotnet-host 10.0.12-1.hum1, dotnet-hostfxr-10.0 10.0.12-1.hum1, dotnet-runtime-10.0 10.0.12-1.hum1, aspnetcore-runtime-10.0 10.0.12-1.hum1, dotnet-runtime-dbg-10.0 10.0.12-1.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
59 d ago

Exploit prediction

0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami dotnet
>=9.0.0, <9.0.20
>=10.0.0, <10.0.12
9.0.20
10.0.12
bitnami dotnet-sdk
>=9.0.0, <9.0.20
>=10.0.0, <10.0.12
9.0.20
10.0.12

Affected products

  • Microsoft .NET 10.0 runtime
  • Microsoft .NET 11.0 runtime
  • Microsoft .NET 9.0 runtime
  • Microsoft Microsoft Visual Studio 2022 version 17.14
  • Microsoft Microsoft Visual Studio 2026 version 18.9

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-94 Improper Control of Generation of Code

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.