diff --git a/rules/S6667/metadata.json b/rules/S6667/metadata.json
index 36ae77f81d5..d2365a124c3 100644
--- a/rules/S6667/metadata.json
+++ b/rules/S6667/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "MEDIUM"
+      "MAINTAINABILITY": "LOW"
     },
     "attribute": "COMPLETE"
   },
diff --git a/rules/S6668/metadata.json b/rules/S6668/metadata.json
index 2d9815b65a4..bfe7812cc17 100644
--- a/rules/S6668/metadata.json
+++ b/rules/S6668/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "RELIABILITY": "MEDIUM"
+      "RELIABILITY": "LOW"
     },
     "attribute": "LOGICAL"
   },
diff --git a/rules/S6669/metadata.json b/rules/S6669/metadata.json
index 7aafe7cfa83..08986912cc5 100644
--- a/rules/S6669/metadata.json
+++ b/rules/S6669/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "MEDIUM"
+      "MAINTAINABILITY": "LOW"
     },
     "attribute": "CONVENTIONAL"
   },
diff --git a/rules/S6670/metadata.json b/rules/S6670/metadata.json
index 669e4231e40..74f8c5fe9fd 100644
--- a/rules/S6670/metadata.json
+++ b/rules/S6670/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "RELIABILITY": "MEDIUM"
+      "RELIABILITY": "LOW"
     },
     "attribute": "LOGICAL"
   },
diff --git a/rules/S6672/metadata.json b/rules/S6672/metadata.json
index ea51aecca44..a5b1cf8f380 100644
--- a/rules/S6672/metadata.json
+++ b/rules/S6672/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "MEDIUM"
+      "MAINTAINABILITY": "LOW"
     },
     "attribute": "CONVENTIONAL"
   },
diff --git a/rules/S6674/metadata.json b/rules/S6674/metadata.json
index 0b91e8ddbda..9b89038acad 100644
--- a/rules/S6674/metadata.json
+++ b/rules/S6674/metadata.json
@@ -3,7 +3,7 @@
   "type": "BUG",
   "code": {
     "impacts": {
-      "RELIABILITY": "MEDIUM"
+      "RELIABILITY": "HIGH"
     },
     "attribute": "LOGICAL"
   },
diff --git a/rules/S6675/metadata.json b/rules/S6675/metadata.json
index 11ef6f65118..b40390efe37 100644
--- a/rules/S6675/metadata.json
+++ b/rules/S6675/metadata.json
@@ -3,7 +3,7 @@
   "type": "CODE_SMELL",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "MEDIUM"
+      "MAINTAINABILITY": "LOW"
     },
     "attribute": "LOGICAL"
   },
diff --git a/rules/S6776/metadata.json b/rules/S6776/metadata.json
index 47cd26d2991..b783f0ab937 100644
--- a/rules/S6776/metadata.json
+++ b/rules/S6776/metadata.json
@@ -8,7 +8,7 @@
   },
   "tags": [
   ],
-  "defaultSeverity": "Major",
+  "defaultSeverity": "Minor",
   "ruleSpecification": "RSPEC-6776",
   "sqKey": "S6776",
   "scope": "All",
diff --git a/rules/S6798/csharp/metadata.json b/rules/S6798/csharp/metadata.json
index 33cd8322fb3..bb3ff81ab60 100644
--- a/rules/S6798/csharp/metadata.json
+++ b/rules/S6798/csharp/metadata.json
@@ -17,7 +17,7 @@
   "quickfix": "infeasible",
   "code": {
     "impacts": {
-      "RELIABILITY": "HIGH"
+      "RELIABILITY": "MEDIUM"
     },
     "attribute": "LOGICAL"
   }
diff --git a/rules/S6800/csharp/metadata.json b/rules/S6800/csharp/metadata.json
index a1ce051a8f4..4ec76736793 100644
--- a/rules/S6800/csharp/metadata.json
+++ b/rules/S6800/csharp/metadata.json
@@ -17,7 +17,7 @@
   "quickfix": "infeasible",
   "code": {
     "impacts": {
-      "RELIABILITY": "HIGH"
+      "RELIABILITY": "MEDIUM"
     },
     "attribute": "LOGICAL"
   }
diff --git a/rules/S6930/metadata.json b/rules/S6930/metadata.json
index 3458d163fde..e19a6f759db 100644
--- a/rules/S6930/metadata.json
+++ b/rules/S6930/metadata.json
@@ -19,7 +19,7 @@
   "quickfix": "targeted",
   "code": {
     "impacts": {
-      "RELIABILITY": "HIGH"
+      "RELIABILITY": "MEDIUM"
     },
     "attribute": "LOGICAL"
   }
diff --git a/rules/S6931/metadata.json b/rules/S6931/metadata.json
index 1eca95cf662..b800792e4a9 100644
--- a/rules/S6931/metadata.json
+++ b/rules/S6931/metadata.json
@@ -19,7 +19,7 @@
   "quickfix": "partial",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "HIGH"
+      "MAINTAINABILITY": "MEDIUM"
     },
     "attribute": "CLEAR"
   }
diff --git a/rules/S6932/csharp/metadata.json b/rules/S6932/csharp/metadata.json
index f4ccb751593..50190600c4d 100644
--- a/rules/S6932/csharp/metadata.json
+++ b/rules/S6932/csharp/metadata.json
@@ -17,7 +17,7 @@
   "quickfix": "infeasible",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "HIGH",
+      "MAINTAINABILITY": "MEDIUM",
       "RELIABILITY": "MEDIUM",
       "SECURITY": "MEDIUM"
     },
diff --git a/rules/S6934/metadata.json b/rules/S6934/metadata.json
index da9deaf5562..4fd75895d86 100644
--- a/rules/S6934/metadata.json
+++ b/rules/S6934/metadata.json
@@ -17,7 +17,7 @@
     "quickfix": "partial",
     "code": {
       "impacts": {
-        "MAINTAINABILITY": "HIGH"
+        "MAINTAINABILITY": "MEDIUM"
       },
       "attribute": "CLEAR"
     }
diff --git a/rules/S6960/metadata.json b/rules/S6960/metadata.json
index 1558912db77..72ec04c17c4 100644
--- a/rules/S6960/metadata.json
+++ b/rules/S6960/metadata.json
@@ -18,7 +18,7 @@
     "quickfix": "partial",
     "code": {
       "impacts": {
-        "MAINTAINABILITY": "HIGH"
+        "MAINTAINABILITY": "MEDIUM"
       },
       "attribute": "MODULAR"
     }    
diff --git a/rules/S6964/metadata.json b/rules/S6964/metadata.json
index 9f1d7c0dda6..eefe94d99aa 100644
--- a/rules/S6964/metadata.json
+++ b/rules/S6964/metadata.json
@@ -17,7 +17,7 @@
   "quickfix": "targeted",
   "code": {
     "impacts": {
-      "RELIABILITY": "HIGH"
+      "RELIABILITY": "MEDIUM"
     },
     "attribute": "TRUSTWORTHY"
   }
diff --git a/rules/S6967/metadata.json b/rules/S6967/metadata.json
index bc3ac135d2e..0a9f51639c9 100644
--- a/rules/S6967/metadata.json
+++ b/rules/S6967/metadata.json
@@ -9,7 +9,7 @@
     "tags": [
         "asp.net"
     ],
-    "defaultSeverity": "Major",
+    "defaultSeverity": "Critical",
     "ruleSpecification": "RSPEC-6967",
     "sqKey": "S6967",
     "scope": "All",
diff --git a/rules/S6968/csharp/metadata.json b/rules/S6968/csharp/metadata.json
index 6efdda55951..d7f483209a5 100644
--- a/rules/S6968/csharp/metadata.json
+++ b/rules/S6968/csharp/metadata.json
@@ -17,7 +17,7 @@
   "quickfix": "partial",
   "code": {
     "impacts": {
-      "MAINTAINABILITY": "HIGH"
+      "MAINTAINABILITY": "MEDIUM"
     },
     "attribute": "CLEAR"
   }