Azure Identity Libraries and Microsoft Authentication Library Elevation of Privilege Vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

6.8 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2024-35255: 0.83% estimated exploitation activity in the next 30 days; percentile 57.60 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Azure Identity Libraries and Microsoft Authentication Library Elevation of Privilege Vulnerability.

Published by the source

11 Jun 2024, 18:30 UTC

Last modified by the source

10 Sep 2026, 03:50 UTC

Source last checked

26 Oct 2026, 12:37 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-m5vv-6r4h-3vj9

2. Revision 2 · amended · 24 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-m5vv-6r4h-3vj9

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# Patch Next advisory brief: CVE-2024-35255

Advisory: Azure Identity Libraries and Microsoft Authentication Library Elevation of Privilege Vulnerability
IDs: CVE-2024-35255, GHSA-m5vv-6r4h-3vj9
Record: https://patchnext.com/advisories/cve-2024-35255 (revision 3, source checked 26 Oct 2026, 12:37 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @azure/msal-node 2.9.2; microsoft.identity.client 4.61.3, 4.60.4; github.com/Azure/azure-sdk-for-go/sdk/azidentity 1.6.0-beta.4.0.20240610221955-50774cd97099; azure-identity 1.16.1; com.azure:azure-identity 1.12.2; @azure/identity 4.2.1; azure.identity 1.11.4; com.microsoft.azure:msal4j 1.15.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @azure/msal-node: affected >= 2.7.0, < 2.9.2; fixed in 2.9.2
- NuGet microsoft.identity.client: affected >= 4.49.1, < 4.60.4; >= 4.61.0, < 4.61.3; fixed in 4.61.3, 4.60.4
- Go github.com/Azure/azure-sdk-for-go/sdk/azidentity: affected < 1.6.0-beta.4.0.20240610221955-50774cd97099; fixed in 1.6.0-beta.4.0.20240610221955-50774cd97099
- PyPI azure-identity: affected < 1.16.1; fixed in 1.16.1
- Maven com.azure:azure-identity: affected < 1.12.2; fixed in 1.12.2
- npm @azure/identity: affected < 4.2.1; fixed in 4.2.1
- NuGet azure.identity: affected < 1.11.4; fixed in 1.11.4
- Maven com.microsoft.azure:msal4j: affected >= 1.14.4-beta, < 1.15.1; fixed in 1.15.1

## Suggested inspection (read-only)
- `npm ls @azure/msal-node --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- NuGet microsoft.identity.client: check the installed version with your package manager.
- Go github.com/Azure/azure-sdk-for-go/sdk/azidentity: check the installed version with your package manager.
- `python -m pip show azure-identity`: prints the installed version. Run with the environment that serves production active.
- Maven com.azure:azure-identity: check the installed version with your package manager.
- `npm ls @azure/identity --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- NuGet azure.identity: check the installed version with your package manager.
- Maven com.microsoft.azure:msal4j: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @azure/msal-node, microsoft.identity.client, github.com/Azure/azure-sdk-for-go/sdk/azidentity, azure-identity, com.azure:azure-identity, @azure/identity, azure.identity, com.microsoft.azure:msal4j.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-m5vv-6r4h-3vj9 (OSV record GHSA-m5vv-6r4h-3vj9 lists affected ranges: PyPI azure-identity >=0 =0 =0 =2.7.0 =4.49.1 =4.61.0 =0 =1.14.4-beta <1.15.1 (fixed); NuGet…)
- Verified: https://github.com/advisories/GHSA-m5vv-6r4h-3vj9 (GitHub-reviewed advisory GHSA-m5vv-6r4h-3vj9 lists affected ranges: PyPI azure-identity >=0 =0 =0 =0 =2.7.0 =1.14.4-beta =4.49.1 =4.61.0 =0 <1.6.0-beta.4.0.20240610221955-50774cd97099)

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