CVE-2026-40411
Azure Virtual Network Gateway Remote Code Execution Vulnerability
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Azure Virtual Network Gateway Remote Code Execution Vulnerability
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
- Record
CVE-2026-40411- CVSS 3.1
- 9.9 Critical
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 - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2026-31510
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
- Record
EUVD-2026-31510- CVSS 3.1
- 9.9 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-g63w-3vwq-rqw8
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to...
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
- Record
GHSA-g63w-3vwq-rqw8- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.
- Record
CVE-2026-40411- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-40411 is a critical vulnerability (CVSS 9.9) in Microsoft Azure Virtual Network Gateway, published May 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.53%, the 44th percentile. No source names a fixed version.