What is CVE-2026-32173?

CVE-2026-32173 is a high-severity vulnerability in Microsoft Azure Sre Agent Gateway - Signalr Hub, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-04-02.

How severe is CVE-2026-32173?

High severity. CVSS v3 base score is 8.6 out of 10.

Auth bypass in Microsoft Azure Sre Agent Gateway - Signalr Hub

CVE-2026-32173

Improper authentication in Azure SRE Agent allows an unauthorized attacker to disclose information over a network.

Vulnerability class: Broken Authentication

EPSS: 0.001 (22.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). 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.

Affected products

Microsoft Azure Sre Agent Gateway - Signalr Hub

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

Azure SRE Agent Information Disclosure Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-32173?: CVE-2026-32173 is a high-severity vulnerability in Microsoft Azure Sre Agent Gateway - Signalr Hub, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-04-02.
How severe is CVE-2026-32173?: High severity. CVSS v3 base score is 8.6 out of 10.