---
id: CVE-2026-50515
title: Azure Service Bus Remote Code Execution Vulnerability
summary: >-
  Deserialization of untrusted data in Azure Service Bus allows an authorized
  attacker to execute code over a network.
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-502
vendor: Microsoft
product: Azure Service Bus
affected:
  - azure_service_bus -
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-07T14:22:18.576299Z'
published: '2026-08-06'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:35:23.660Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-50515'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50515'
    label: Azure Service Bus Remote Code Execution Vulnerability
tags:
  - cve.org
epss: 0.01694
epssPercentile: 0.76147
ingestedAt: '2026-09-08T18:07:34.903Z'
---

## Overview

Deserialization of untrusted data in Azure Service Bus allows an authorized attacker to execute code over a network.

## Affected

- `azure_service_bus -`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.