CVE-2026-50515: Deserialization of untrusted data in Azure Service Bus
CVE-2026-50515 analysis covering impact, affected products, versions, remediation, and cross-checked defender guidance.
CVE-2026-50515 is a vulnerability published by NVD on 8/7/2026.
What happened
Deserialization of untrusted data in Azure Service Bus allows an authorized attacker to execute code over a network.
Affected products and versions
- microsoft azure service bus -
Severity and weakness
CVSS: CRITICAL 9.9. Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Weaknesses: CWE-502.
Known exploitation
No CISA KEV entry is currently attached to the NVD record.
What defenders should do
- Identify whether the affected product and version range exists in production.
- Review vendor advisories and release notes before change windows.
- Patch, upgrade, disable the vulnerable component, or apply vendor mitigations.
- Verify the running version after deployment, not only the package inventory.