CVE-2026-77900
Microsoft Azure App Service for Linux
- Microsoft Azure App Service for Linux
- Critical
- CVSS 9.8
- EPSS 0.72%
- No fixed version listed
What to do
No fixed version listed
Affected products
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Azure App Service for Linux | - | None listed |
Advisories and fixes
- Vendor advisory msrc.microsoft.com
Scores and signals
- Exploitation
- No known exploitation
- Severity
- Critical, CVSS 9.8 (v3.1, scored by microsoft)
- EPSS
- 0.72% chance of exploitation in the next 30 days (EPSS from FIRST, as of Oct 25, 2026)
- CISA's SSVC decision points
- Exploitation: none. Automatable: yes. Technical impact: total. As of Oct 9, 2026.
- Weakness
- CWE-306: Missing Authentication for Critical Function
- Vendor
- Microsoft, Azure App Service for Linux
Timeline
- First listed as critical by cve.now. Affected and fixed versions come from the CVE record, once one is published.