diff --git a/cli/package.json b/cli/package.json
index 55284a6c89..79cc246cf3 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -22,6 +22,7 @@
   },
   "dependencies": {
     "axios": "^0.27.2",
+    "cbor": "^9.0.1",
     "chalk": "~4.1.2",
     "cli-table3": "^0.6.3",
     "commander": "^9.3.0",
diff --git a/cli/src/index.ts b/cli/src/index.ts
index 7b93597a94..f63f5a1e17 100755
--- a/cli/src/index.ts
+++ b/cli/src/index.ts
@@ -142,7 +142,11 @@ export class Commander {
       .option('-V, --mqtt-version <5/3.1.1/3.1>', 'the MQTT version', parseMQTTVersion, 5)
       .option('-h, --hostname <HOST>', 'the broker host', 'localhost')
       .option('-p, --port <PORT>', 'the broker port', parseNumber)
-      .option('-f, --format <TYPE>', 'the format type of the input message, support base64, json, hex', parseFormat)
+      .option(
+        '-f, --format <TYPE>',
+        'the format type of the input message, support base64, json, hex and cbor',
+        parseFormat,
+      )
       .option('-i, --client-id <ID>', 'the client id', getClientId())
       .option('--no-clean', 'set the clean session flag to false', true)
       .option('-k, --keepalive <SEC>', 'send a ping every SEC seconds', parseNumber, 30)
@@ -230,7 +234,7 @@ export class Commander {
         'the user properties of MQTT 5.0 (e.g. -up "name: mqttx cli")',
         parseUserProperties,
       )
-      .option('-f, --format <TYPE>', 'format the message body, support base64, json, hex', parseFormat)
+      .option('-f, --format <TYPE>', 'format the message body, support base64, json, hex and cbor', parseFormat)
       .option('-v, --verbose', 'print the topic before the message')
       .option(
         '--output-mode <default/clean>',
diff --git a/cli/src/lib/pub.ts b/cli/src/lib/pub.ts
index 7a3f9cd433..a6be8ad322 100644
--- a/cli/src/lib/pub.ts
+++ b/cli/src/lib/pub.ts
@@ -15,9 +15,9 @@ import * as Debug from 'debug'
 
 const processPublishMessage = (
   message: string | Buffer,
-  protobufPath: string | undefined,
-  protobufMessageName: string | undefined,
-  format: FormatType | undefined,
+  protobufPath?: string,
+  protobufMessageName?: string,
+  format?: FormatType,
 ): Buffer | string => {
   /*
    * Pipeline for processing outgoing messages in two potential stages:
diff --git a/cli/src/lib/sub.ts b/cli/src/lib/sub.ts
index cc2f081ff1..cfb6977f60 100644
--- a/cli/src/lib/sub.ts
+++ b/cli/src/lib/sub.ts
@@ -9,9 +9,9 @@ import * as Debug from 'debug'
 
 const processReceivedMessage = (
   payload: Buffer,
-  protobufPath: string | undefined,
-  protobufMessageName: string | undefined,
-  format: FormatType | undefined,
+  protobufPath?: string,
+  protobufMessageName?: string,
+  format?: FormatType,
 ): string => {
   let message: string | Buffer = payload
   /*
diff --git a/cli/src/types/global.d.ts b/cli/src/types/global.d.ts
index d0336497b0..5650e703c4 100644
--- a/cli/src/types/global.d.ts
+++ b/cli/src/types/global.d.ts
@@ -9,7 +9,7 @@ declare global {
 
   type QoS = 0 | 1 | 2
 
-  type FormatType = 'base64' | 'json' | 'hex'
+  type FormatType = 'base64' | 'json' | 'hex' | 'cbor'
 
   type OutputMode = 'clean' | 'default'
 
diff --git a/cli/src/utils/convertPayload.ts b/cli/src/utils/convertPayload.ts
index 9dcf6d52a4..de0e49712d 100644
--- a/cli/src/utils/convertPayload.ts
+++ b/cli/src/utils/convertPayload.ts
@@ -1,30 +1,68 @@
 import chalk from 'chalk'
 import { jsonParse, jsonStringify } from './jsonUtils'
+import cbor from 'cbor'
+import { basicLog } from './signale'
 
-const convertJSON = (value: Buffer | string, action: 'encode' | 'decode') => {
+type Action = 'encode' | 'decode'
+
+const handleError = (err: unknown, value: Buffer | string, action: Action) => {
+  basicLog.error(err as Error)
+  return action === 'decode' ? chalk.red(value.toString()) : process.exit(1)
+}
+
+/**
+ * Converts a JSON payload to a Buffer or string based on the specified action.
+ * @param value - The JSON payload to convert.
+ * @param action - The action to perform on the payload ('decode' or 'encode').
+ * @returns The converted payload.
+ */
+const convertJSON = (value: Buffer | string, action: Action) => {
+  try {
+    return action === 'decode'
+      ? jsonStringify(jsonParse(value.toString()), null, 2)
+      : Buffer.from(jsonStringify(jsonParse(value.toString())))
+  } catch (err) {
+    return handleError(err, value, action)
+  }
+}
+
+/**
+ * Converts a CBOR payload to JSON or vice versa.
+ * @param value - The CBOR payload to convert.
+ * @param action - The action to perform: 'decode' to convert CBOR to JSON, 'encode' to convert JSON to CBOR.
+ * @returns The converted payload.
+ */
+const convertCBOR = (value: Buffer | string, action: Action) => {
   try {
-    if (action === 'decode') {
-      return jsonStringify(jsonParse(value.toString()), null, 2)
-    } else {
-      return Buffer.from(jsonStringify(jsonParse(value.toString())))
-    }
+    return action === 'decode'
+      ? jsonStringify(cbor.decodeFirstSync(value), null, 2)
+      : cbor.encodeOne(JSON.parse(value.toString()))
   } catch (err) {
-    return chalk.red(err)
+    return handleError(err, value, action)
   }
 }
 
-const convertPayload = (payload: Buffer | string, format?: FormatType, action: 'encode' | 'decode' = 'decode') => {
+/**
+ * Converts the payload based on the specified format and action.
+ * @param payload - The payload to be converted.
+ * @param format - The format in which the payload should be converted. (Optional)
+ * @param action - The action to be performed on the payload. (Default: 'decode')
+ * @returns The converted payload.
+ */
+const convertPayload = (payload: Buffer | string, format?: FormatType, action: Action = 'decode') => {
   const actions = {
     encode: {
       base64: () => Buffer.from(payload.toString(), 'base64'),
       json: () => convertJSON(payload, 'encode'),
       hex: () => Buffer.from(payload.toString().replace(/\s+/g, ''), 'hex'),
+      cbor: () => convertCBOR(payload, 'encode'),
       default: () => Buffer.from(payload.toString(), 'utf-8'),
     },
     decode: {
       base64: () => payload.toString('base64'),
       json: () => convertJSON(payload, 'decode'),
       hex: () => payload.toString('hex').replace(/(.{4})/g, '$1 '),
+      cbor: () => convertCBOR(payload, 'decode'),
       default: () => payload.toString('utf-8'),
     },
   }
diff --git a/cli/src/utils/parse.ts b/cli/src/utils/parse.ts
index 4c2f3e08e6..76c30d4d90 100644
--- a/cli/src/utils/parse.ts
+++ b/cli/src/utils/parse.ts
@@ -98,7 +98,7 @@ const parsePubTopic = (value: string) => {
 }
 
 const parseFormat = (value: string) => {
-  if (!['base64', 'json', 'hex'].includes(value)) {
+  if (!['base64', 'json', 'hex', 'cbor'].includes(value)) {
     signale.error('Not a valid format type.')
     process.exit(1)
   }
diff --git a/cli/yarn.lock b/cli/yarn.lock
index 73fb603961..bd8c19b80b 100644
--- a/cli/yarn.lock
+++ b/cli/yarn.lock
@@ -222,6 +222,13 @@ buffer@^5.5.0:
     base64-js "^1.3.1"
     ieee754 "^1.1.13"
 
+cbor@^9.0.1:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/cbor/-/cbor-9.0.1.tgz#b16e393d4948d44758cd54ac6151379d443b37ae"
+  integrity sha512-/TQOWyamDxvVIv+DY9cOLNuABkoyz8K/F3QE56539pGVYohx0+MEA1f4lChFTX79dBTBS7R1PF6ovH7G+VtBfQ==
+  dependencies:
+    nofilter "^3.1.0"
+
 chalk@^2.3.2:
   version "2.4.2"
   resolved "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz"
@@ -579,6 +586,11 @@ ms@2.1.2:
   resolved "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
+nofilter@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/nofilter/-/nofilter-3.1.0.tgz#c757ba68801d41ff930ba2ec55bab52ca184aa66"
+  integrity sha512-l2NNj07e9afPnhAhvgVrCD/oy2Ai1yfLpuo3EpiO1jFTsB4sFz6oIfAfSZyQzVpkZQ9xS8ZS5g1jCBgq4Hwo0g==
+
 number-allocator@^1.0.9:
   version "1.0.10"
   resolved "https://registry.npmjs.org/number-allocator/-/number-allocator-1.0.10.tgz"