diff --git a/dotnet/ComponentClassRegistry/Smbios/src/SmbiosHardwareManifestPlugin.cs b/dotnet/ComponentClassRegistry/Smbios/src/SmbiosHardwareManifestPlugin.cs
index 32284e9..d000680 100644
--- a/dotnet/ComponentClassRegistry/Smbios/src/SmbiosHardwareManifestPlugin.cs
+++ b/dotnet/ComponentClassRegistry/Smbios/src/SmbiosHardwareManifestPlugin.cs
@@ -134,6 +134,9 @@ public static void AddComponentsToManifestV2(IDictionary<int, IList<SmbiosTable>
     }
 
     public static string Strref(SmbiosTable table, int offset) {
+        if (offset >= table.Data.Length) {
+            return "";
+        }
         int index = table.Data[offset];
         return index > 0 ? table.Strings[table.Data[offset]-1] : "";
     }