Description
Improper authentication in Azure SRE Agent allows an unauthorized attacker to disclose information over a network.
Published: 2026-04-02
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: Information Disclosure
Action: Apply Patch
AI Analysis

Impact

Azure SRE Agent Gateway - SignalR Hub suffers from improper authentication that allows an unauthorized attacker to read sensitive data over the network. The flaw falls under authentication failures, as denoted by CWE‑287 and improper request authentication, CWE‑863. A successful exploitation would expose confidential information, potentially compromising the integrity of the system and revealing internal state details.

Affected Systems

The vulnerability affects Microsoft Azure SRE Agent Gateway – SignalR Hub. Version details are not publicly disclosed in the CVE description, so apply the latest available release for all deployed instances.

Risk and Exploitability

The CVSS base score of 8.6 classifies the issue as High severity. However, the EPSS score of less than 1 % indicates a low likelihood of exploitation at present, and the vulnerability is not cataloged in the CISA KEV list. It is inferred that the attack vector is remote network access to the SignalR hub endpoints, requiring no special privileges or additional malware.

Generated by OpenCVE AI on April 7, 2026 at 02:24 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Download and install the Microsoft security update for CVE‑2026‑32173 from the Microsoft Security Response Center update guide.
  • Verify that all Azure SRE Agent Gateway – SignalR Hub instances have been patched to the latest version.
  • Implement network segmentation or firewall rules to limit access to the SignalR hub to trusted networks only.
  • Enable monitoring and logging on the SRE Agent to detect unauthorized authentication attempts.

Generated by OpenCVE AI on April 7, 2026 at 02:24 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 06 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft azure Sre Agent
Weaknesses CWE-863
CPEs cpe:2.3:a:microsoft:azure_sre_agent:-:*:*:*:*:*:*:*
Vendors & Products Microsoft azure Sre Agent

Fri, 03 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft azure Sre Agent Gateway
Vendors & Products Microsoft azure Sre Agent Gateway

Fri, 03 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Description Improper authentication in Azure SRE Agent allows an unauthorized attacker to disclose information over a network.
Title Azure SRE Agent Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft azure Sre Agent Gateway Signalr Hub
Weaknesses CWE-287
CPEs cpe:2.3:a:microsoft:azure_sre_agent_gateway_signalR_hub:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft azure Sre Agent Gateway Signalr Hub
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Azure Sre Agent Azure Sre Agent Gateway Azure Sre Agent Gateway Signalr Hub
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-04-22T20:52:42.553Z

Reserved: 2026-03-10T23:09:43.266Z

Link: CVE-2026-32173

cve-icon Vulnrichment

Updated: 2026-04-03T13:48:30.813Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-03T00:16:04.547

Modified: 2026-04-06T18:04:41.617

Link: CVE-2026-32173

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-07T07:55:17Z

Weaknesses