● Critical · CVSS 9.8

How to Fix CVE-2024-27099: azure-uamqp-c (Bundle Sibling)

Q: Is CVE-2024-27099 actively exploited?

Yes. CVE-2024-27099 is on the CISA Known Exploited Vulnerabilities catalog, so federal civilian agencies are required to patch on the published deadline. Most enterprises treat the same date as the practical floor.

Q: What is the CVSS severity of CVE-2024-27099?

Critical. See the advisory for the full CVSS vector.

Q: Where can I read the official advisory?

See https://github.com/Azure/azure-uamqp-c/security/advisories/GHSA-6rh4-fj44-v4jj

Q: Does the patch require a reboot?

It depends on the deployment. Service-only updates usually need a service restart; OS-level fixes require a full reboot. Check the vendor release notes for the exact post-upgrade steps.

⚡ At a glance


Severity	CVSS 9.8, Critical
Actively exploited?	No
Affected	Azure azure-uamqp-c (< 2023-2-08)
Fixed in	Same patched build as CVE-2024-21646
Type (CWE)	CWE-415: Double Free

CVE-2024-27099 is a sibling vulnerability in the same Azure azure-uamqp-c advisory bundle as CVE-2024-21646. The same patched build closes every CVE in the bundle, so the remediation procedure for CVE-2024-27099 is the same as for the primary write-up.

What's different about CVE-2024-27099?

The uAMQP is a C library for AMQP 1.0 communication to Azure Cloud Services. When processing an incorrect AMQP_VALUE failed state, may cause a double free problem. This may cause a RCE.

The technical distinction is the specific code path or input vector listed in the description above. Impact is consistent with the bundle: compromise of the affected component as described in the vendor advisory. The patched build addresses every code path in the advisory in one update.