diff --git a/redfish-core/lib/ethernet.hpp b/redfish-core/lib/ethernet.hpp
index 8735178..ee8d2cd 100644
--- a/redfish-core/lib/ethernet.hpp
+++ b/redfish-core/lib/ethernet.hpp
@@ -635,9 +635,9 @@
         *bits = 0;
     }
 
-    char* endPtr;
+    char* endPtr = nullptr;
     long previousValue = 255;
-    bool firstZeroInByteHit;
+    bool firstZeroInByteHit = false;
     for (const std::string& byte : bytesInMask)
     {
         if (byte.empty())
@@ -1581,8 +1581,8 @@
                 return;
             }
 
-            const std::string* addr;
-            uint8_t prefix;
+            const std::string* addr = nullptr;
+            uint8_t prefix = 0;
 
             // Find the address and prefixLength values. Any values that are
             // not explicitly provided are assumed to be unmodified from the
diff --git a/redfish-core/lib/managers.hpp b/redfish-core/lib/managers.hpp
index 3a955cb..ad5c5e3 100644
--- a/redfish-core/lib/managers.hpp
+++ b/redfish-core/lib/managers.hpp
@@ -1092,8 +1092,8 @@
             std::vector<double> outputs;
             for (auto& step : *steps)
             {
-                double target;
-                double out;
+                double target = 0.0;
+                double out = 0.0;
 
                 if (!redfish::json_util::readJson(step, response->res, "Target",
                                                   target, "Output", out))
diff --git a/redfish-core/lib/message_registries.hpp b/redfish-core/lib/message_registries.hpp
index ae02189..cfa2bf5 100644
--- a/redfish-core/lib/message_registries.hpp
+++ b/redfish-core/lib/message_registries.hpp
@@ -62,7 +62,7 @@
     const crow::Request&, const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
     const std::string& registry)
 {
-    const message_registries::Header* header;
+    const message_registries::Header* header = nullptr;
     std::string dmtf = "DMTF ";
     const char* url = nullptr;
 
@@ -127,7 +127,7 @@
     const std::string& registry, const std::string& registryMatch)
 
 {
-    const message_registries::Header* header;
+    const message_registries::Header* header = nullptr;
     std::vector<const message_registries::MessageEntry*> registryEntries;
     if (registry == "Base")
     {
diff --git a/redfish-core/lib/sensors.hpp b/redfish-core/lib/sensors.hpp
index 6d10bb7..99dfc81 100644
--- a/redfish-core/lib/sensors.hpp
+++ b/redfish-core/lib/sensors.hpp
@@ -2758,10 +2758,10 @@
     BMCWEB_LOG_INFO << "setSensorsOverride for subNode"
                     << sensorAsyncResp->chassisSubNode << "\n";
 
-    const char* propertyValueName;
+    const char* propertyValueName = nullptr;
     std::unordered_map<std::string, std::pair<double, std::string>> overrideMap;
     std::string memberId;
-    double value;
+    double value = 0.0;
     for (auto& collectionItems : allCollections)
     {
         if (collectionItems.first == "Temperatures")
diff --git a/redfish-core/lib/systems.hpp b/redfish-core/lib/systems.hpp
index 2605c3f..e7f4f02 100644
--- a/redfish-core/lib/systems.hpp
+++ b/redfish-core/lib/systems.hpp
@@ -1728,7 +1728,7 @@
     BMCWEB_LOG_DEBUG << "Set Automatic Retry.";
 
     // OpenBMC only supports "Disabled" and "RetryAttempts".
-    bool autoRebootEnabled;
+    bool autoRebootEnabled = false;
 
     if (automaticRetryConfig == "Disabled")
     {
@@ -2765,7 +2765,7 @@
 
             // Get the command and host vs. chassis
             std::string command;
-            bool hostCommand;
+            bool hostCommand = true;
             if ((resetType == "On") || (resetType == "ForceOn"))
             {
                 command = "xyz.openbmc_project.State.Host.Transition.On";