Heap-based Buffer Overflow in Visual Studio by Microsoft
CVE-2026-71328

8.8HIGH

Key Information:

Vendor

Microsoft
Status
.net 10.0
.net 11.0
.net 8.0
.net 9.0
Vendor
CVE Published:
8 September 2026

What is CVE-2026-71328?

A heap-based buffer overflow vulnerability in Visual Studio can potentially allow an unauthorized attacker to execute arbitrary code via network access. This flaw could be exploited to compromise the integrity and confidentiality of systems using affected versions of the software. To mitigate this risk, users are advised to apply the latest security updates and review security practices carefully.

Affected Version(s)

.NET 10.0 10.0.0 < 10.0.12

.NET 11.0 11.0.0 < 11.0 RC1

.NET 8.0 8.0.0 < 8.0.31

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.