diff --git a/lib/mayaUsd/render/MaterialXGenOgsXml/Nodes/TexcoordNodeMaya.cpp b/lib/mayaUsd/render/MaterialXGenOgsXml/Nodes/TexcoordNodeMaya.cpp
index c7c6e14b67..cf02c7bfc4 100644
--- a/lib/mayaUsd/render/MaterialXGenOgsXml/Nodes/TexcoordNodeMaya.cpp
+++ b/lib/mayaUsd/render/MaterialXGenOgsXml/Nodes/TexcoordNodeMaya.cpp
@@ -29,7 +29,7 @@ std::string geomNameFromIndex(const std::string& index)
     // pxr\usdImaging\usdImaging\materialParamUtils.cpp would then be able to handle indexed values.
 #if 0
     int i = fromValueString<int>(index);
-    if (i < 0 || i < 9) {
+    if (i < 0 || i > 9) {
         i = 0;
     }
     if (i > 0) {
diff --git a/lib/mayaUsd/ufe/UsdShaderAttributeDef.cpp b/lib/mayaUsd/ufe/UsdShaderAttributeDef.cpp
index 7eafcc684c..7e3f4c48f7 100644
--- a/lib/mayaUsd/ufe/UsdShaderAttributeDef.cpp
+++ b/lib/mayaUsd/ufe/UsdShaderAttributeDef.cpp
@@ -117,13 +117,39 @@ static const MetadataMap _metaMap = {
       } },
     { MayaUsdMetadata->UISoftMin
           .GetString(), // Maya has 0-100 sliders. In rendering, sliders are 0-1.
-      [](const PXR_NS::SdrShaderProperty&) {
-          return std::string { "0.0" }; // Will only be returned if the metadata does not exist.
+      [](const PXR_NS::SdrShaderProperty& p) {
+          // Will only be returned if the metadata does not exist.
+          static const auto defaultSoftMin = std::unordered_map<std::string, Ufe::Value> {
+              { Ufe::Attribute::kFloat, std::string { "0" } },
+              { Ufe::Attribute::kFloat3, std::string { "0,0,0" } },
+              { Ufe::Attribute::kColorFloat3, std::string { "0,0,0" } },
+              { Ufe::Attribute::kDouble, std::string { "0" } },
+#ifdef UFE_V4_FEATURES_AVAILABLE
+              { Ufe::Attribute::kFloat2, std::string { "0,0" } },
+              { Ufe::Attribute::kFloat4, std::string { "0,0,0,0" } },
+              { Ufe::Attribute::kColorFloat4, std::string { "0,0,0,0" } },
+#endif
+          };
+          auto itDefault = defaultSoftMin.find(usdTypeToUfe(&p));
+          return itDefault != defaultSoftMin.end() ? itDefault->second : Ufe::Value();
       } },
     { MayaUsdMetadata->UISoftMax
           .GetString(), // Maya has 0-100 sliders. In rendering, sliders are 0-1.
-      [](const PXR_NS::SdrShaderProperty&) {
-          return std::string { "1.0" }; // Will only be returned if the metadata does not exist.
+      [](const PXR_NS::SdrShaderProperty& p) {
+          // Will only be returned if the metadata does not exist.
+          static const auto defaultSoftMax = std::unordered_map<std::string, Ufe::Value> {
+              { Ufe::Attribute::kFloat, std::string { "1" } },
+              { Ufe::Attribute::kFloat3, std::string { "1,1,1" } },
+              { Ufe::Attribute::kColorFloat3, std::string { "1,1,1" } },
+              { Ufe::Attribute::kDouble, std::string { "1" } },
+#ifdef UFE_V4_FEATURES_AVAILABLE
+              { Ufe::Attribute::kFloat2, std::string { "1,1" } },
+              { Ufe::Attribute::kFloat4, std::string { "1,1,1,1" } },
+              { Ufe::Attribute::kColorFloat4, std::string { "1,1,1,1" } },
+#endif
+          };
+          auto itDefault = defaultSoftMax.find(usdTypeToUfe(&p));
+          return itDefault != defaultSoftMax.end() ? itDefault->second : Ufe::Value();
       } },
     // If Ufe decides to use another completely different convention, it can be added here:
 };
diff --git a/test/lib/ufe/testAttribute.py b/test/lib/ufe/testAttribute.py
index 1b0ee4964d..66c3778266 100644
--- a/test/lib/ufe/testAttribute.py
+++ b/test/lib/ufe/testAttribute.py
@@ -1936,6 +1936,29 @@ def testMaterialXMetadata(self):
             attr = shaderAttrs.attribute("inputs:" + attrName)
             self.assertEqual(str(attr.getMetadata(metaName)), metaValue)
 
+        for rangedType in ("float", "vector2", "vector3", "vector4", "color3", "color4"):
+            numComponents = 1
+            if rangedType[-1].isdecimal():
+                numComponents = int(rangedType[-1])
+            dotDef = ufe.NodeDef.definition(materialItem.runTimeId(), "ND_dot_" + rangedType)
+            cmd = dotDef.createNodeCmd(materialItem, ufe.PathComponent("dotty_" + rangedType))
+            ufeCmd.execute(cmd)
+            shaderItem = cmd.insertedChild
+            shaderAttrs = ufe.Attributes.attributes(shaderItem)
+            attr = shaderAttrs.attribute("inputs:in")
+            self.assertEqual(str(attr.getMetadata("uisoftmin")), ",".join(["0" for i in range(numComponents)]))
+            self.assertEqual(str(attr.getMetadata("uisoftmax")), ",".join(["1" for i in range(numComponents)]))
+
+        for unrangedType in ("boolean", "integer", "matrix33", "matrix44", "string", "filename"):
+            dotDef = ufe.NodeDef.definition(materialItem.runTimeId(), "ND_dot_" + unrangedType)
+            cmd = dotDef.createNodeCmd(materialItem, ufe.PathComponent("dotty_" + unrangedType))
+            ufeCmd.execute(cmd)
+            shaderItem = cmd.insertedChild
+            shaderAttrs = ufe.Attributes.attributes(shaderItem)
+            attr = shaderAttrs.attribute("inputs:in")
+            self.assertFalse(attr.hasMetadata("uisoftmin"))
+            self.assertFalse(attr.hasMetadata("uisoftmax"))
+
     @unittest.skipUnless(ufeUtils.ufeFeatureSetVersion() >= 4, 'Test only available in UFE v4 or greater')
     @unittest.skipUnless(Usd.GetVersion() >= (0, 21, 8), 'Requires CanApplySchema from USD')
     def testCreateUsdPreviewSurfaceAttribute(self):