diff --git a/docs/api.md b/docs/api.md
index 8d29c318e5..e6a1d62c51 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -18925,7 +18925,6 @@ things were successful or not.
         * [~validateSpecificAttribute(endpointAttribute, attribute, db, zapSessionId)](#module_Validation API_ Validation APIs..validateSpecificAttribute) ⇒
         * [~validateSpecificEndpoint(endpoint)](#module_Validation API_ Validation APIs..validateSpecificEndpoint) ⇒
         * [~isValidNumberString(value)](#module_Validation API_ Validation APIs..isValidNumberString) ⇒
-        * [~isValidSignedNumberString(value)](#module_Validation API_ Validation APIs..isValidSignedNumberString) ⇒
         * [~isValidHexString(value)](#module_Validation API_ Validation APIs..isValidHexString) ⇒
         * [~isValidDecimalString(value)](#module_Validation API_ Validation APIs..isValidDecimalString) ⇒
         * [~isValidFloat(value)](#module_Validation API_ Validation APIs..isValidFloat) ⇒
@@ -18934,6 +18933,7 @@ things were successful or not.
         * [~extractBigIntegerValue(value)](#module_Validation API_ Validation APIs..extractBigIntegerValue) ⇒
         * [~isBigInteger(bits)](#module_Validation API_ Validation APIs..isBigInteger) ⇒
         * [~getBoundsInteger(attribute, typeSize, isSigned)](#module_Validation API_ Validation APIs..getBoundsInteger) ⇒
+        * [~getTypeRange(typeSize, isSigned, isMin)](#module_Validation API_ Validation APIs..getTypeRange) ⇒
         * [~unsignedToSignedInteger(value, typeSize)](#module_Validation API_ Validation APIs..unsignedToSignedInteger) ⇒
         * [~getIntegerFromAttribute(attribute, typeSize, isSigned)](#module_Validation API_ Validation APIs..getIntegerFromAttribute) ⇒
         * [~getIntegerAttributeSize(db, zapSessionId, attribType)](#module_Validation API_ Validation APIs..getIntegerAttributeSize) ⇒ <code>\*</code>
@@ -18976,7 +18976,7 @@ Enforce zigbee specific common cluster initialization.
 
 ### Validation API: Validation APIs~validateAttribute(db, endpointTypeId, attributeRef, clusterRef, zapSessionId) ⇒
 Main attribute validation function.
-Returns a promise of an object which stores a list of validational issues.
+Returns a promise of an object which stores a list of validation issues.
 Such issues as "Invalid type" or "Out of Range".
 
 **Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
@@ -19057,18 +19057,6 @@ This applies to both actual numbers as well as octet strings.
 | --- | --- |
 | value | <code>\*</code> | 
 
-<a name="module_Validation API_ Validation APIs..isValidSignedNumberString"></a>
-
-### Validation API: Validation APIs~isValidSignedNumberString(value) ⇒
-Check if value is a valid signed number in string form.
-
-**Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
-**Returns**: boolean  
-
-| Param | Type |
-| --- | --- |
-| value | <code>\*</code> | 
-
 <a name="module_Validation API_ Validation APIs..isValidHexString"></a>
 
 ### Validation API: Validation APIs~isValidHexString(value) ⇒
@@ -19169,6 +19157,20 @@ Get the integer attribute's bounds.
 | typeSize | <code>\*</code> | 
 | isSigned | <code>\*</code> | 
 
+<a name="module_Validation API_ Validation APIs..getTypeRange"></a>
+
+### Validation API: Validation APIs~getTypeRange(typeSize, isSigned, isMin) ⇒
+Gets the range of an integer type.
+
+**Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
+**Returns**: integer  
+
+| Param | Type |
+| --- | --- |
+| typeSize | <code>\*</code> | 
+| isSigned | <code>\*</code> | 
+| isMin | <code>\*</code> | 
+
 <a name="module_Validation API_ Validation APIs..unsignedToSignedInteger"></a>
 
 ### Validation API: Validation APIs~unsignedToSignedInteger(value, typeSize) ⇒
@@ -19300,7 +19302,6 @@ things were successful or not.
         * [~validateSpecificAttribute(endpointAttribute, attribute, db, zapSessionId)](#module_Validation API_ Validation APIs..validateSpecificAttribute) ⇒
         * [~validateSpecificEndpoint(endpoint)](#module_Validation API_ Validation APIs..validateSpecificEndpoint) ⇒
         * [~isValidNumberString(value)](#module_Validation API_ Validation APIs..isValidNumberString) ⇒
-        * [~isValidSignedNumberString(value)](#module_Validation API_ Validation APIs..isValidSignedNumberString) ⇒
         * [~isValidHexString(value)](#module_Validation API_ Validation APIs..isValidHexString) ⇒
         * [~isValidDecimalString(value)](#module_Validation API_ Validation APIs..isValidDecimalString) ⇒
         * [~isValidFloat(value)](#module_Validation API_ Validation APIs..isValidFloat) ⇒
@@ -19309,6 +19310,7 @@ things were successful or not.
         * [~extractBigIntegerValue(value)](#module_Validation API_ Validation APIs..extractBigIntegerValue) ⇒
         * [~isBigInteger(bits)](#module_Validation API_ Validation APIs..isBigInteger) ⇒
         * [~getBoundsInteger(attribute, typeSize, isSigned)](#module_Validation API_ Validation APIs..getBoundsInteger) ⇒
+        * [~getTypeRange(typeSize, isSigned, isMin)](#module_Validation API_ Validation APIs..getTypeRange) ⇒
         * [~unsignedToSignedInteger(value, typeSize)](#module_Validation API_ Validation APIs..unsignedToSignedInteger) ⇒
         * [~getIntegerFromAttribute(attribute, typeSize, isSigned)](#module_Validation API_ Validation APIs..getIntegerFromAttribute) ⇒
         * [~getIntegerAttributeSize(db, zapSessionId, attribType)](#module_Validation API_ Validation APIs..getIntegerAttributeSize) ⇒ <code>\*</code>
@@ -19351,7 +19353,7 @@ Enforce zigbee specific common cluster initialization.
 
 ### Validation API: Validation APIs~validateAttribute(db, endpointTypeId, attributeRef, clusterRef, zapSessionId) ⇒
 Main attribute validation function.
-Returns a promise of an object which stores a list of validational issues.
+Returns a promise of an object which stores a list of validation issues.
 Such issues as "Invalid type" or "Out of Range".
 
 **Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
@@ -19432,18 +19434,6 @@ This applies to both actual numbers as well as octet strings.
 | --- | --- |
 | value | <code>\*</code> | 
 
-<a name="module_Validation API_ Validation APIs..isValidSignedNumberString"></a>
-
-### Validation API: Validation APIs~isValidSignedNumberString(value) ⇒
-Check if value is a valid signed number in string form.
-
-**Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
-**Returns**: boolean  
-
-| Param | Type |
-| --- | --- |
-| value | <code>\*</code> | 
-
 <a name="module_Validation API_ Validation APIs..isValidHexString"></a>
 
 ### Validation API: Validation APIs~isValidHexString(value) ⇒
@@ -19544,6 +19534,20 @@ Get the integer attribute's bounds.
 | typeSize | <code>\*</code> | 
 | isSigned | <code>\*</code> | 
 
+<a name="module_Validation API_ Validation APIs..getTypeRange"></a>
+
+### Validation API: Validation APIs~getTypeRange(typeSize, isSigned, isMin) ⇒
+Gets the range of an integer type.
+
+**Kind**: inner method of [<code>Validation API: Validation APIs</code>](#module_Validation API_ Validation APIs)  
+**Returns**: integer  
+
+| Param | Type |
+| --- | --- |
+| typeSize | <code>\*</code> | 
+| isSigned | <code>\*</code> | 
+| isMin | <code>\*</code> | 
+
 <a name="module_Validation API_ Validation APIs..unsignedToSignedInteger"></a>
 
 ### Validation API: Validation APIs~unsignedToSignedInteger(value, typeSize) ⇒
diff --git a/src-electron/validation/validation.js b/src-electron/validation/validation.js
index 1530970d53..015501470f 100644
--- a/src-electron/validation/validation.js
+++ b/src-electron/validation/validation.js
@@ -30,7 +30,7 @@ const queryPackage = require('../db/query-package.js')
 
 /**
  * Main attribute validation function.
- * Returns a promise of an object which stores a list of validational issues.
+ * Returns a promise of an object which stores a list of validation issues.
  * Such issues as "Invalid type" or "Out of Range".
  * @param {*} db db reference
  * @param {*} endpointTypeId endpoint reference
@@ -128,20 +128,6 @@ async function validateSpecificAttribute(
       //Interpreting float values
       if (!checkAttributeBoundsFloat(attribute, endpointAttribute))
         defaultAttributeIssues.push('Out of range')
-    } else if (await types.isSignedInteger(db, zapSessionId, attribute.type)) {
-      // we shouldn't check boundaries for an invalid number string
-      if (!isValidSignedNumberString(endpointAttribute.defaultValue)) {
-        defaultAttributeIssues.push('Invalid Integer')
-      } else if (
-        !(await checkAttributeBoundsInteger(
-          attribute,
-          endpointAttribute,
-          db,
-          zapSessionId
-        ))
-      ) {
-        defaultAttributeIssues.push('Out of range')
-      }
     } else {
       // we shouldn't check boundaries for an invalid number string
       if (!isValidNumberString(endpointAttribute.defaultValue)) {
@@ -210,16 +196,6 @@ function isValidNumberString(value) {
   return /^(0x)?[\dA-F]+$/i.test(value) || Number.isInteger(Number(value))
 }
 
-/**
- * Check if value is a valid signed number in string form.
- *
- * @param {*} value
- * @returns boolean
- */
-function isValidSignedNumberString(value) {
-  return /^(0x)?[\dA-F]+$/i.test(value) || Number.isInteger(Number(value))
-}
-
 /**
  * Check if value is a valid hex string.
  *
@@ -315,11 +291,26 @@ async function getBoundsInteger(attribute, typeSize, isSigned) {
   return {
     min: attribute.min
       ? await getIntegerFromAttribute(attribute.min, typeSize, isSigned)
-      : null,
+      : getTypeRange(typeSize, isSigned, true),
     max: attribute.max
       ? await getIntegerFromAttribute(attribute.max, typeSize, isSigned)
-      : null
+      : getTypeRange(typeSize, isSigned, false)
+  }
+}
+
+/**
+ * Gets the range of an integer type.
+ *
+ * @param {*} typeSize
+ * @param {*} isSigned
+ * @param {*} isMin
+ * @returns integer
+ */
+function getTypeRange(typeSize, isSigned, isMin) {
+  if (isMin) {
+    return isSigned ? -Math.pow(2, typeSize - 1) : 0
   }
+  return isSigned ? Math.pow(2, typeSize - 1) - 1 : Math.pow(2, typeSize) - 1
 }
 
 /**
diff --git a/test/validation.test.js b/test/validation.test.js
index 4d9174fc59..3082083da1 100644
--- a/test/validation.test.js
+++ b/test/validation.test.js
@@ -425,6 +425,83 @@ test(
   timeout.medium()
 )
 
+test('validate Attribute without min/max', async () => {
+  //Invalid default value
+  let fakeEndpointAttribute = { defaultValue: '300' }
+
+  let fakeAttribute = { type: 'int8u' }
+
+  let attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+
+  expect(attributeValidation.defaultValue.length == 1).toBeTruthy()
+  expect(
+    attributeValidation.defaultValue[0].includes('Out of range')
+  ).toBeTruthy()
+
+  //Valid default value
+  fakeEndpointAttribute.defaultValue = '30'
+  attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+  expect(attributeValidation.defaultValue.length == 0).toBeTruthy()
+
+  //Invalid default value for enum16
+  fakeEndpointAttribute.defaultValue = '66000'
+  fakeAttribute.type = 'enum16'
+  attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+  expect(attributeValidation.defaultValue.length == 1).toBeTruthy()
+  expect(
+    attributeValidation.defaultValue[0].includes('Out of range')
+  ).toBeTruthy()
+
+  //Valid default value for enum16
+  fakeEndpointAttribute.defaultValue = '65535'
+  attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+  expect(attributeValidation.defaultValue.length == 0).toBeTruthy()
+
+  //Invalid default value for bitmap8
+  fakeEndpointAttribute.defaultValue = '-2'
+  fakeAttribute.type = 'bitmap8'
+  attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+  expect(attributeValidation.defaultValue.length == 1).toBeTruthy()
+  expect(
+    attributeValidation.defaultValue[0].includes('Out of range')
+  ).toBeTruthy()
+
+  //Valid default value for bitmap8
+  fakeEndpointAttribute.defaultValue = '255'
+  attributeValidation = await validation.validateSpecificAttribute(
+    fakeEndpointAttribute,
+    fakeAttribute,
+    db,
+    sid
+  )
+  expect(attributeValidation.defaultValue.length == 0).toBeTruthy()
+})
+
 test(
   'validate endpoint test',
   () => {