diff --git a/changelogs/fragments/55083-univention-diff-UnboundLocalError.yaml b/changelogs/fragments/55083-univention-diff-UnboundLocalError.yaml
new file mode 100644
index 00000000000..f7f8cfb86a3
--- /dev/null
+++ b/changelogs/fragments/55083-univention-diff-UnboundLocalError.yaml
@@ -0,0 +1,6 @@
+bugfixes:
+  - udm_user - Fix issues when state is absent with undefined variable diff at the module return.
+  - udm_group - Fix issues when state is absent with undefined variable diff at the module return.
+  - udm_share - Fix issues when state is absent with undefined variable diff at the module return.
+  - udm_dns_zone - Fix issues when state is absent with undefined variable diff at the module return.
+  - udm_dns_record - Fix issues when state is absent with undefined variable diff at the module return.
diff --git a/lib/ansible/modules/cloud/univention/udm_dns_record.py b/lib/ansible/modules/cloud/univention/udm_dns_record.py
index 5ad7b90b441..cd580a826b2 100644
--- a/lib/ansible/modules/cloud/univention/udm_dns_record.py
+++ b/lib/ansible/modules/cloud/univention/udm_dns_record.py
@@ -122,6 +122,7 @@ def main():
     data = module.params['data']
     state = module.params['state']
     changed = False
+    diff = None
 
     obj = list(ldap_search(
         '(&(objectClass=dNSZone)(zoneName={})(relativeDomainName={}))'.format(zone, name),
diff --git a/lib/ansible/modules/cloud/univention/udm_dns_zone.py b/lib/ansible/modules/cloud/univention/udm_dns_zone.py
index 5b3069f4bdc..03af2fb1f97 100644
--- a/lib/ansible/modules/cloud/univention/udm_dns_zone.py
+++ b/lib/ansible/modules/cloud/univention/udm_dns_zone.py
@@ -169,6 +169,7 @@ def main():
     mx = module.params['mx']
     state = module.params['state']
     changed = False
+    diff = None
 
     obj = list(ldap_search(
         '(&(objectClass=dNSZone)(zoneName={}))'.format(zone),
diff --git a/lib/ansible/modules/cloud/univention/udm_group.py b/lib/ansible/modules/cloud/univention/udm_group.py
index 7e6564591e5..55064b9bed4 100644
--- a/lib/ansible/modules/cloud/univention/udm_group.py
+++ b/lib/ansible/modules/cloud/univention/udm_group.py
@@ -111,6 +111,7 @@ def main():
     subpath = module.params['subpath']
     state = module.params['state']
     changed = False
+    diff = None
 
     groups = list(ldap_search(
         '(&(objectClass=posixGroup)(cn={}))'.format(name),
diff --git a/lib/ansible/modules/cloud/univention/udm_share.py b/lib/ansible/modules/cloud/univention/udm_share.py
index a90e8382328..4523baec0b9 100644
--- a/lib/ansible/modules/cloud/univention/udm_share.py
+++ b/lib/ansible/modules/cloud/univention/udm_share.py
@@ -476,6 +476,7 @@ def main():
     name = module.params['name']
     state = module.params['state']
     changed = False
+    diff = None
 
     obj = list(ldap_search(
         '(&(objectClass=univentionShare)(cn={}))'.format(name),
diff --git a/lib/ansible/modules/cloud/univention/udm_user.py b/lib/ansible/modules/cloud/univention/udm_user.py
index 0cb77c289bf..9d3ff6b76af 100644
--- a/lib/ansible/modules/cloud/univention/udm_user.py
+++ b/lib/ansible/modules/cloud/univention/udm_user.py
@@ -410,6 +410,7 @@ def main():
     subpath = module.params['subpath']
     state = module.params['state']
     changed = False
+    diff = None
 
     users = list(ldap_search(
         '(&(objectClass=posixAccount)(uid={}))'.format(username),