by Kastro
Paper/Archive/CVE-2026-77900

CVE-2026-77900

Microsoft Azure App Service for Linux — Azure App Service Remote Code Execution Vulnerability

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 53.8.538 × 2010.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Azure App Service for Linux-–CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-77900