CVE-2023-21531

highpriority · track · 0EPSS 0.006 · 50 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.62% (50th) EPSS

CVSS 7 · high

Is it mine?

16 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Azure Service Fabric Container Elevation of Privilege Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedAzure Service Fabric 8.2msrc_csaf
8.2 CU8:Security Update:https://github.com/microsoft/service-fabric/tree/master/release_notes
https://github.com/microsoft/service-fabric/tree/master/release_notes
FixedAzure Service Fabric 9.0 for Linuxmsrc_csaf
9.0 CU5:Security Update:https://github.com/microsoft/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_90CU5.md
https://github.com/microsoft/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_90CU5.md
FixedAzure Service Fabric 9.1msrc_csaf
9.1 CU1:Security Update:https://github.com/microsoft/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_91CU1.md
https://github.com/microsoft/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_91CU1.md

cvss

Technical severity, 0–10. One row per scoring source.

7.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1 · impact 5.9

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-269USCWE-284USCWE-284US

affected products (16)

Products and version ranges known to be affected.

Microsoft Windows Azure Service Fabricall versionscert_bundDEcpe:/a:microsoft:windows_azure:service_fabric
Microsoft Azure Service Fabric 8.28.2 → 8.2 CU8enisa_euvdEU
Microsoft Azure Service Fabric 9.0 for Linux9.0 → 9.0 CU5enisa_euvdEU
Microsoft Azure Service Fabric 9.19.1 → 9.1 CU1enisa_euvdEU
Microsoft Corp Service Fabric≤ 8.2fstec_bduRU
Microsoft Corp Service Fabric≤ 9.0fstec_bduRU
Microsoft Corp Service Fabric≤ 9.1fstec_bduRU
Azure Service Fabric 8.2all versionsfixedmsrc_csafUS
Azure Service Fabric 8.2< 8.2 CU8msrc_csafUS
Azure Service Fabric 9.0 for Linuxall versionsfixedmsrc_csafUS
Azure Service Fabric 9.0 for Linux< 9.0 CU5msrc_csafUS
Azure Service Fabric 9.1all versionsfixedmsrc_csafUS
Azure Service Fabric 9.1< 9.1 CU1msrc_csafUS
microsoft azure service fabric= 8.2nvdUScpe:2.3:a:microsoft:azure_service_fabric:*:*:*:*:*:*:*:*
microsoft azure service fabric= 9.0nvdUScpe:2.3:a:microsoft:azure_service_fabric:*:*:*:*:*:*:*:*
microsoft azure service fabric= 9.1nvdUScpe:2.3:a:microsoft:azure_service_fabric:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0053Microsoft Windows Azure Service Fabric: Schwachstelle ermöglicht PrivilegieneskalationDeutsch2023-01-10csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in Microsoft Windows Azure Service Fabric ausnutzen, um seine Privilegien zu erhöhen.
msrc_CVE-2023-21531Azure Service Fabric Container Elevation of Privilege Vulnerability2023-01-10csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf nvd NVD CVE.org MITRE

published 2023-01-10modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

scry

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