# CVE-2026-69443: Microsoft Azure Attestation out-of-bounds read information disclosure

Source: https://junglewise.ai/threats/cve-2026-69443-microsoft-azure-attestation-out-of-bounds-read-information  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-69443 · Severity: high · CVSS 7.5 · Published 2026-09-08

Microsoft's Azure Attestation and Device Health Attestation services are cloud-based components used to verify the integrity and identity of devices and systems in enterprise environments. An out-of-bounds read vulnerability allows an attacker to read sensitive information from these services over the network, potentially exposing attestation data, credentials, or other confidential details that could be used to compromise device trust or gain unauthorized access to protected systems.

Technologies: [Microsoft Azure Attestation](https://junglewise.ai/threats/technologies/azure-attestation), [Microsoft Device Health Attestation Service](https://junglewise.ai/threats/technologies/device-health-attestation-service). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69443 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69443 being exploited in the wild.

**How severe is CVE-2026-69443?** High severity, with a CVSS score of 7.5, published 8 September 2026.

**Which products and versions are affected?** Microsoft Azure Attestation; Microsoft Device Health Attestation Service.

**Is there a fix for CVE-2026-69443?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-69443 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-69443?** Check whether you run Microsoft Azure Attestation or Microsoft Device Health Attestation Service. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an out-of-bounds read in the Azure Attestation service and Device Health Attestation Service that permits unauthorized information disclosure. The flaw allows a network-based attacker to read memory beyond intended boundaries, potentially accessing sensitive attestation responses, cryptographic material, or authentication tokens. No authentication appears to be required for exploitation. An attacker can leverage this to extract confidential information transmitted by or stored within the attestation services, compromising the integrity of device attestation operations.

## Affected products

- Microsoft Azure Attestation
- Microsoft Device Health Attestation Service

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69443](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69443)

## Related threats

- [Microsoft Azure Attestation out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-69577-out-of-bounds-read-in-microsoft-azure-attestation-service-and)
- [Microsoft Azure Attestation service out-of-bounds read](https://junglewise.ai/threats/cve-2026-69454-out-of-bounds-read-in-microsoft-azure-attestation-service-and)
- [Microsoft Azure Attestation improper input validation spoofing vulnerability](https://junglewise.ai/threats/cve-2026-45642-microsoft-azure-attestation-improper-input-validation-spoofing)