CVE-2026-77900
Critical
Description
Missing authentication for critical function in Azure App Service allows an unauthorized attacker to execute code over a network.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Azure App Service for Linux
PublishedOct 8, 2026
First seenOct 8, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft Azure App Service for Linux | No range specified | — |
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