diff --git a/data/deprecations/17-9-ast-da-deprecate-cov-guided-fuzz-testing.yml b/data/deprecations/17-9-ast-da-deprecate-cov-guided-fuzz-testing.yml
new file mode 100644
index 0000000000000000000000000000000000000000..85420518d8a7b2f6f1766da27db2ccd392514984
--- /dev/null
+++ b/data/deprecations/17-9-ast-da-deprecate-cov-guided-fuzz-testing.yml
@@ -0,0 +1,24 @@
+- title: "Coverage-guided fuzz testing is deprecated"
+  removal_milestone: "19.0"
+  announcement_milestone: "18.0"
+  breaking_change: true
+  window: 1
+  reporter: mikeeddington
+  stage: application security testing
+  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/517841
+  impact: high
+  scope: project
+  resolution_role: Owner
+  manual_task: false
+  body: |  # (required) Don't change this line.
+    Coverage-guided fuzz testing is deprecated and will not be supported
+    from GitLab 18.0. The feature will be completely removed in GitLab 19.0.
+
+    Coverage-guided fuzz testing integrated several open-source fuzzers into GitLab.
+    If you are impacted, you can integrate your open-source fuzzers as standalone applications,
+    or migrate to another security feature like [GitLab Advanced SAST](https://docs.gitlab.com/ee/user/application_security/sast/gitlab_advanced_sast.html).
+  end_of_support_milestone: 18.0
+  tiers: [Ultimate]
+  documentation_url: https://docs.gitlab.com/ee/user/application_security/coverage_fuzzing/
+  image_url:
+  video_url:
diff --git a/doc/update/deprecations.md b/doc/update/deprecations.md
index d435aa07f1e63093e03547de23fe14f4d69d36bc..ec65977e54d4cdf8cc5b7cb0a92ad89c59f24906 100644
--- a/doc/update/deprecations.md
+++ b/doc/update/deprecations.md
@@ -126,6 +126,28 @@ For details, see the [migration guide](https://docs.gitlab.com/user/group/compli
 
 <div class="deprecation breaking-change" data-milestone="19.0">
 
+### Coverage-guided fuzz testing is deprecated
+
+<div class="deprecation-notes">
+
+- Announced in GitLab <span class="milestone">18.0</span>
+- End of Support in GitLab <span class="milestone">18.0</span>
+- Removal in GitLab <span class="milestone">19.0</span> ([breaking change](https://docs.gitlab.com/update/terminology/#breaking-change))
+- To discuss this change or learn more, see the [deprecation issue](https://gitlab.com/gitlab-org/gitlab/-/issues/517841).
+
+</div>
+
+Coverage-guided fuzz testing is deprecated and will not be supported
+from GitLab 18.0. The feature will be completely removed in GitLab 19.0.
+
+Coverage-guided fuzz testing integrated several open-source fuzzers into GitLab.
+If you are impacted, you can integrate your open-source fuzzers as standalone applications,
+or migrate to another security feature like [GitLab Advanced SAST](https://docs.gitlab.com/ee/user/application_security/sast/gitlab_advanced_sast.html).
+
+</div>
+
+<div class="deprecation breaking-change" data-milestone="19.0">
+
 ### GitLab Self-Managed certificate-based integration with Kubernetes
 
 <div class="deprecation-notes">