diff --git a/README.md b/README.md
index 5753a4a1..1554ce78 100644
--- a/README.md
+++ b/README.md
@@ -332,7 +332,6 @@ The following tests are not yet implemented and therefore missing:
 - Recommended Test 6.2.26
 - Recommended Test 6.2.31
 - Recommended Test 6.2.32
-- Recommended Test 6.2.33
 - Recommended Test 6.2.34
 - Recommended Test 6.2.35
 - Recommended Test 6.2.36
@@ -460,6 +459,7 @@ export const recommendedTest_6_2_27: DocumentTest
 export const recommendedTest_6_2_28: DocumentTest
 export const recommendedTest_6_2_29: DocumentTest
 export const recommendedTest_6_2_30: DocumentTest
+export const recommendedTest_6_2_33: DocumentTest
 export const recommendedTest_6_2_43: DocumentTest
 ```
 
diff --git a/csaf_2_1/recommendedTests.js b/csaf_2_1/recommendedTests.js
index d90a5174..8f5791e2 100644
--- a/csaf_2_1/recommendedTests.js
+++ b/csaf_2_1/recommendedTests.js
@@ -33,5 +33,6 @@ export { recommendedTest_6_2_27 } from './recommendedTests/recommendedTest_6_2_2
 export { recommendedTest_6_2_28 } from './recommendedTests/recommendedTest_6_2_28.js'
 export { recommendedTest_6_2_29 } from './recommendedTests/recommendedTest_6_2_29.js'
 export { recommendedTest_6_2_30 } from './recommendedTests/recommendedTest_6_2_30.js'
+export { recommendedTest_6_2_33 } from './recommendedTests/recommendedTest_6_2_33.js'
 export { recommendedTest_6_2_38 } from './recommendedTests/recommendedTest_6_2_38.js'
 export { recommendedTest_6_2_43 } from './recommendedTests/recommendedTest_6_2_43.js'
diff --git a/csaf_2_1/recommendedTests/recommendedTest_6_2_33.js b/csaf_2_1/recommendedTests/recommendedTest_6_2_33.js
new file mode 100644
index 00000000..7214540f
--- /dev/null
+++ b/csaf_2_1/recommendedTests/recommendedTest_6_2_33.js
@@ -0,0 +1,98 @@
+import Ajv from 'ajv/dist/jtd.js'
+import { compareZonedDateTimes } from '../dateHelper.js'
+import { Temporal } from 'temporal-polyfill'
+
+const ajv = new Ajv()
+
+const inputSchema = /** @type {const} */ ({
+  additionalProperties: true,
+  properties: {
+    document: {
+      additionalProperties: true,
+      properties: {
+        tracking: {
+          additionalProperties: true,
+          properties: {
+            revision_history: {
+              elements: {
+                additionalProperties: true,
+                optionalProperties: {
+                  date: { type: 'string' },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+    vulnerabilities: {
+      elements: {
+        additionalProperties: true,
+        optionalProperties: {
+          disclosure_date: { type: 'string' },
+        },
+      },
+    },
+  },
+})
+
+const validate = ajv.compile(inputSchema)
+
+/**
+ * This implements the recommended test 6.2.33 of the CSAF 2.1 standard.
+ *
+ * @param {any} doc
+ */
+export function recommendedTest_6_2_33(doc) {
+  /** @type {Array<{ message: string; instancePath: string }>} */
+  const warnings = []
+  const context = { warnings }
+
+  if (!validate(doc)) {
+    return context
+  }
+  const currentTimestampUtc = Temporal.Now.zonedDateTimeISO('UTC').toString()
+  for (let i = 0; i < doc.vulnerabilities.length; ++i) {
+    const disclosureDate = doc.vulnerabilities[i].disclosure_date
+    // check if the disclosure date is in the past
+    if (
+      disclosureDate &&
+      compareZonedDateTimes(disclosureDate, currentTimestampUtc) < 1
+    ) {
+      const revisionHistory = doc.document.tracking.revision_history
+      // sort the revision history (ascending) so one don't need to loop through it
+      // to find the date of its newest item
+      revisionHistory.sort((a, b) => {
+        // if both dates are undefined, consider them equal
+        if (!a.date && !b.date) {
+          return 0
+        }
+        // move undefined items to the beginning of the array
+        if (!a.date) {
+          return -1
+        }
+        if (!b.date) {
+          return 1
+        }
+
+        // if both dates are not undefined, compare them
+        return compareZonedDateTimes(a.date, b.date)
+      })
+      // compare the disclosure date with the date of the newest item of the revision history
+      const newestItemInRevisionHistory =
+        revisionHistory[revisionHistory.length - 1].date
+      if (
+        newestItemInRevisionHistory &&
+        compareZonedDateTimes(disclosureDate, newestItemInRevisionHistory) > 0
+      ) {
+        context.warnings.push({
+          message:
+            'The disclosure_date is in the past but newer than the date of the newest item of the revision_history.',
+          instancePath: `/vulnerabilities/${i}/disclosure_date`,
+        })
+      }
+    }
+  }
+
+  return context
+}
diff --git a/tests/csaf_2_1/oasis.js b/tests/csaf_2_1/oasis.js
index 6caa005c..b303bf66 100644
--- a/tests/csaf_2_1/oasis.js
+++ b/tests/csaf_2_1/oasis.js
@@ -36,7 +36,6 @@ const excluded = [
   '6.2.26',
   '6.2.31',
   '6.2.32',
-  '6.2.33',
   '6.2.34',
   '6.2.35',
   '6.2.36',
diff --git a/tests/csaf_2_1/recommendedTest_6_2_33.js b/tests/csaf_2_1/recommendedTest_6_2_33.js
new file mode 100644
index 00000000..c93f9184
--- /dev/null
+++ b/tests/csaf_2_1/recommendedTest_6_2_33.js
@@ -0,0 +1,36 @@
+import assert from 'node:assert'
+import { recommendedTest_6_2_33 } from '../../csaf_2_1/recommendedTests.js'
+
+describe('recommendedTest_6_2_33', function () {
+  it('only runs on relevant documents', function () {
+    assert.equal(
+      recommendedTest_6_2_33({ vulnerabilities: 'mydoc' }).warnings.length,
+      0
+    )
+  })
+  it('skips empty objects', function () {
+    assert.equal(
+      recommendedTest_6_2_33({
+        document: {
+          tracking: {
+            revision_history: [
+              {
+                date: '2024-01-22T10:00:00.000Z',
+                number: '1',
+                summary: 'Initial version.',
+              },
+              {}, // should be ignored
+            ],
+          },
+        },
+        vulnerabilities: [
+          {
+            disclosure_date: '2024-02-24T10:00:00.000Z',
+          },
+          {}, // should be ignored
+        ],
+      }).warnings.length,
+      1
+    )
+  })
+})