diff --git a/csaf_2_1/mandatoryTests.js b/csaf_2_1/mandatoryTests.js
index 3d89ae65..c7b8dc5e 100644
--- a/csaf_2_1/mandatoryTests.js
+++ b/csaf_2_1/mandatoryTests.js
@@ -2,7 +2,6 @@ export {
   mandatoryTest_6_1_3,
   mandatoryTest_6_1_5,
   mandatoryTest_6_1_12,
-  mandatoryTest_6_1_14,
   mandatoryTest_6_1_15,
   mandatoryTest_6_1_16,
   mandatoryTest_6_1_17,
@@ -38,6 +37,7 @@ export { mandatoryTest_6_1_9 } from './mandatoryTests/mandatoryTest_6_1_9.js'
 export { mandatoryTest_6_1_10 } from './mandatoryTests/mandatoryTest_6_1_10.js'
 export { mandatoryTest_6_1_11 } from './mandatoryTests/mandatoryTest_6_1_11.js'
 export { mandatoryTest_6_1_13 } from './mandatoryTests/mandatoryTest_6_1_13.js'
+export { mandatoryTest_6_1_14 } from './mandatoryTests/mandatoryTest_6_1_14.js'
 export { mandatoryTest_6_1_27_3 } from './mandatoryTests/mandatoryTest_6_1_27_3.js'
 export { mandatoryTest_6_1_27_4 } from './mandatoryTests/mandatoryTest_6_1_27_4.js'
 export { mandatoryTest_6_1_27_5 } from './mandatoryTests/mandatoryTest_6_1_27_5.js'
diff --git a/csaf_2_1/mandatoryTests/mandatoryTest_6_1_14.js b/csaf_2_1/mandatoryTests/mandatoryTest_6_1_14.js
new file mode 100644
index 00000000..705a9bb4
--- /dev/null
+++ b/csaf_2_1/mandatoryTests/mandatoryTest_6_1_14.js
@@ -0,0 +1,110 @@
+import semver from 'semver'
+import { Ajv } from 'ajv/dist/jtd.js'
+import { compareZonedDateTimes } from '../dateHelper.js'
+
+const { gt, valid } = semver
+
+const ajv = new Ajv()
+
+const revisionHistoryEntrySchema = /** @type {const} */ ({
+  additionalProperties: true,
+  properties: {
+    date: { type: 'string' },
+    number: { type: 'string' },
+  },
+})
+
+const inputSchema = /** @type {const} */ ({
+  additionalProperties: true,
+  optionalProperties: {
+    document: {
+      additionalProperties: true,
+      optionalProperties: {
+        tracking: {
+          additionalProperties: true,
+          optionalProperties: {
+            revision_history: {
+              elements: revisionHistoryEntrySchema,
+            },
+          },
+        },
+      },
+    },
+  },
+})
+
+const validate = ajv.compile(inputSchema)
+
+/**
+ * @typedef {import('ajv/dist/core.js').JTDDataType<typeof revisionHistoryEntrySchema>} RevisionHistoryEntry
+ */
+
+/**
+ * Maps `number` to a value comparable with semver. Integer version numbers
+ * are mapped to semantic versioning by appending `.0.0`.
+ *
+ * @param {string} number
+ * @returns {string | null}
+ */
+const toComparableSemver = (number) => {
+  if (valid(number)) return number
+  return /^\d+$/.test(number) ? `${number}.0.0` : null
+}
+
+/**
+ * @param {RevisionHistoryEntry} a
+ * @param {RevisionHistoryEntry} b
+ * @returns {number}
+ */
+const compareEntries = (a, b) => {
+  const dateComparison = compareZonedDateTimes(a.date, b.date)
+  if (dateComparison !== 0) {
+    return dateComparison
+  }
+
+  const aVersion = toComparableSemver(a.number)
+  const bVersion = toComparableSemver(b.number)
+  if (aVersion === null || bVersion === null) {
+    return 0
+  }
+  return semver.compare(aVersion, bVersion)
+}
+
+/**
+ * @param {unknown} doc
+ */
+export function mandatoryTest_6_1_14(doc) {
+  const ctx = {
+    errors:
+      /** @type {Array<{ instancePath: string; message: string }>} */ ([]),
+    isValid: true,
+  }
+
+  if (
+    !validate(doc) ||
+    !Array.isArray(doc.document?.tracking?.revision_history)
+  ) {
+    return ctx
+  }
+
+  const sortedNumbers = doc.document.tracking.revision_history
+    .slice()
+    .sort(compareEntries)
+    .map((entry) => toComparableSemver(entry.number))
+    .filter(/** @returns {n is string} */ (n) => n !== null)
+
+  const isAscending = sortedNumbers.every(
+    (number, index, all) => index === 0 || gt(number, all[index - 1])
+  )
+
+  if (!isAscending) {
+    ctx.isValid = false
+    ctx.errors.push({
+      instancePath: `/document/tracking/revision_history`,
+      message:
+        'items must be in ascending order when sorted by "date" and "number"',
+    })
+  }
+
+  return ctx
+}
diff --git a/lib/shared/types.ts b/lib/shared/types.ts
index 59d813ab..6d4ca5e8 100644
--- a/lib/shared/types.ts
+++ b/lib/shared/types.ts
@@ -5,7 +5,7 @@ export interface Result {
   infos: Array<{ message: string; instancePath: string }>
 }
 
-interface TestResult {
+export interface TestResult {
   isValid?: boolean
   warnings?: Array<{ message: string; instancePath: string }>
   errors?: Array<{ message: string; instancePath: string }>
diff --git a/tests/csaf_2_1/mandatoryTest_6_1_14.js b/tests/csaf_2_1/mandatoryTest_6_1_14.js
new file mode 100644
index 00000000..9c4d4049
--- /dev/null
+++ b/tests/csaf_2_1/mandatoryTest_6_1_14.js
@@ -0,0 +1,27 @@
+import { mandatoryTest_6_1_14 } from '../../csaf_2_1/mandatoryTests/mandatoryTest_6_1_14.js'
+
+describe('mandatoryTest_6_1_14', function () {
+  it('only runs on relevant documents', function () {
+    expect(mandatoryTest_6_1_14({ product_tree: 'mydoc' }).isValid).to.equal(
+      true
+    )
+  })
+
+  it('skips documents with invalid revision_history entries', function () {
+    const doc = {
+      document: {
+        tracking: {
+          revision_history: [
+            { date: '2020-01-01T00:00:00+00:00', number: '1.0.0' },
+            { date: '2020-01-01T00:00:00+00:00', number: 'invalid' },
+          ],
+        },
+      },
+    }
+
+    expect(() => mandatoryTest_6_1_14(doc)).toBeTruthy()
+    const result = mandatoryTest_6_1_14(doc)
+    expect(result.isValid).to.equal(true)
+    expect(result.errors).to.deep.equal([])
+  })
+})
diff --git a/tests/csaf_2_1/oasis.js b/tests/csaf_2_1/oasis.js
index e372906b..07e2106a 100644
--- a/tests/csaf_2_1/oasis.js
+++ b/tests/csaf_2_1/oasis.js
@@ -68,7 +68,6 @@ const excluded = [
 const skippedTests = new Set([
   'mandatory/oasis_csaf_tc-csaf_2_1-2024-6-1-03-01.json',
   'mandatory/oasis_csaf_tc-csaf_2_1-2024-6-1-03-02.json',
-  'mandatory/oasis_csaf_tc-csaf_2_1-2024-6-1-14-32.json',
   'mandatory/oasis_csaf_tc-csaf_2_1-2024-6-1-21-17.json',
   'mandatory/oasis_csaf_tc-csaf_2_1-2024-6-1-27-08-02.json',
   'recommended/oasis_csaf_tc-csaf_2_1-2024-6-2-38-13.json',