Vulnerability · Published May 22, 2026 · Assigned by microsoft
CVE-2026-40411Azure Virtual Network Gateway Remote Code Execution Vulnerability
Critical 9.9
In plain English
A critical-severity improper input validation in Azure Virtual Network Gateway from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.5%top 55.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Azure Virtual Network Gateway | - |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Azure Virtual Network Gateway Remote Code Execution Vulnerability vendor-advisory, patch