CVE-2026-77900

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 0.49%
EPSS Percentile: 40.73%
CISA KEV: Not listed

Description

Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secure@microsoft.com
Published: 09-Oct-2026 06:17
Last Modified: 10-Oct-2026 11:18
EPSS Date: 2026-10-13
CWE: CWE-306

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

References

secure@microsoft.com

Last enrichment sync: 14-Oct-2026 18:30
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-77900 Microsoft October 2026 Updates Fix 1,411 Flaws, Including Three Zero-Days

CVE (1235)

People (2)

MITRE ATT&CK (1)

Vendors (14)

Products (87)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.