diff --git a/CHANGELOG.next.asciidoc b/CHANGELOG.next.asciidoc
index 93eab0bae5b3..5b77e92cb752 100644
--- a/CHANGELOG.next.asciidoc
+++ b/CHANGELOG.next.asciidoc
@@ -115,6 +115,7 @@ https://github.com/elastic/beats/compare/v8.8.1\...main[Check the HEAD diff]
 - Fix handling of TCP/UDP address resolution during metric initialization. {issue}35064[35064] {pull}36287[36287]
 - Fix handling of Juniper SRX structured data when there is no leading junos element. {issue}36270[36270] {pull}36308[36308]
 - Remove erroneous error log in GCPPubSub input. {pull}36296[36296]
+- Fix Filebeat Cisco module with missing escape character {issue}36325[36325] {pull}36326[36326]
 
 *Heartbeat*
 
diff --git a/x-pack/filebeat/module/cisco/shared/ingest/asa-ftd-pipeline.yml b/x-pack/filebeat/module/cisco/shared/ingest/asa-ftd-pipeline.yml
index bded54f9f572..551fa1909859 100644
--- a/x-pack/filebeat/module/cisco/shared/ingest/asa-ftd-pipeline.yml
+++ b/x-pack/filebeat/module/cisco/shared/ingest/asa-ftd-pipeline.yml
@@ -293,7 +293,7 @@ processors:
       patterns:
         - ^%{NOTSPACE:event.outcome} ((protocol %{POSINT:network.iana_number})|%{NOTSPACE:network.transport}) src %{NOTCOLON:_temp_.cisco.source_interface}:%{IPORHOST:source.address}(/%{POSINT:source.port})?\s*(\(%{CISCO_USER:_temp_.cisco.source_username}\) )?dst %{NOTCOLON:_temp_.cisco.destination_interface}:%{IPORHOST:destination.address}(/%{POSINT:destination.port})?%{DATA}by access-group "%{NOTSPACE:_temp_.cisco.list_id}"
       pattern_definitions:
-        HOSTNAME: "\\b(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62})(?:\\.(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62}))*(\\.?|\\b)"
+        HOSTNAME: '\b(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62}))*(\.?|\b)'
         IPORHOST: "(?:%{IP}|%{HOSTNAME})"
         NOTCOLON: "[^:]*"
         CISCO_USER: ((LOCAL\\)?(%{HOSTNAME}\\)?%{USERNAME}(@%{HOSTNAME})?(, *%{NUMBER})?)
@@ -359,7 +359,7 @@ processors:
       patterns:
         - Built %{NOTSPACE:network.direction} %{NOTSPACE:network.transport} connection %{NUMBER:_temp_.cisco.connection_id} for %{NOTCOLON:_temp_.cisco.source_interface}:%{IPORHOST:source.address}/%{NUMBER:source.port} \(%{IPORHOST:_temp_.natsrcip}/%{NUMBER:_temp_.cisco.mapped_source_port}\)(\(%{CISCO_USER:_temp_.cisco.source_username}\))? to %{NOTCOLON:_temp_.cisco.destination_interface}:%{NOTSPACE:destination.address}/%{NUMBER:destination.port} \(%{NOTSPACE:_temp_.natdstip}/%{NUMBER:_temp_.cisco.mapped_destination_port}\)(\(%{CISCO_USER:_temp_.cisco.destination_username}\))?( \(%{CISCO_USER:_temp_.cisco.termination_user}\))?%{GREEDYDATA}
       pattern_definitions:
-        HOSTNAME: "\\b(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62})(?:\\.(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62}))*(\\.?|\\b)"
+        HOSTNAME: '\b(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62}))*(\.?|\b)'
         IPORHOST: "(?:%{IP}|%{HOSTNAME})"
         NOTCOLON: "[^:]*"
         CISCO_USER: ((LOCAL\\)?(%{HOSTNAME}\\)?%{USERNAME}(@%{HOSTNAME})?(, *%{NUMBER})?)
@@ -376,7 +376,7 @@ processors:
         - Teardown %{DATA} %{NOTSPACE:network.transport} translation from %{NOTCOLON:_temp_.cisco.source_interface}:%{IPORHOST:source.address}/%{NUMBER:source.port}(\s*\(%{CISCO_USER:_temp_.cisco.source_username}\))? to %{NOTCOLON:_temp_.cisco.destination_interface}:%{IP:destination.address}/%{NUMBER:destination.port} duration %{DURATION:_temp_.duration_hms}
       pattern_definitions:
         NOTCOLON: "[^:]*"
-        HOSTNAME: "\\b(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62})(?:\\.(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62}))*(\\.?|\\b)"
+        HOSTNAME: '\b(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62}))*(\.?|\b)'
         IPORHOST: "(?:%{IP}|%{HOSTNAME})"
         CISCO_USER: ((LOCAL\\)?(%{HOSTNAME}\\)?%{USERNAME}(@%{HOSTNAME})?(, *%{NUMBER})?)
         DURATION: "%{INT}:%{MINUTE}:%{SECOND}"
@@ -392,7 +392,7 @@ processors:
       patterns:
         - "Built %{NOTSPACE:network.direction} %{NOTSPACE:network.protocol} connection for faddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSDESTIPORHOST}/%{NUMBER}\\s*(?:\\(%{CISCO_USER:_temp_.cisco.destination_username}\\) )?gaddr (?:%{NOTCOLON}:)?%{MAPPEDSRC}/%{NUMBER} laddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSSOURCEIPORHOST}/%{NUMBER}\\s*(?:\\(%{CISCO_USER:_temp_.cisco.source_username}\\) )?(type %{NUMBER:_temp_.cisco.icmp_type} code %{NUMBER:_temp_.cisco.icmp_code})?"
       pattern_definitions:
-        HOSTNAME: "\\b(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62})(?:\\.(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62}))*(\\.?|\\b)"
+        HOSTNAME: '\b(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62}))*(\.?|\b)'
         IPORHOST: "(?:%{IP}|%{HOSTNAME})"
         NOTCOLON: "[^:]*"
         ECSSOURCEIPORHOST: "(?:%{IP:source.address}|%{HOSTNAME:source.domain})"
@@ -847,7 +847,7 @@ processors:
         - ^Teardown %{NOTSPACE:network.transport} (?:state-bypass )?connection %{NOTSPACE:_temp_.cisco.connection_id} (?:for|from) %{NOTCOLON:_temp_.cisco.source_interface}:%{DATA:source.address}/%{NUMBER:source.port:int}\s*(?:\(?%{CISCO_USER:_temp_.cisco.source_username}\)? )?to %{NOTCOLON:_temp_.cisco.destination_interface}:%{DATA:destination.address}/%{NUMBER:destination.port:int}\s*(?:\(?%{CISCO_USER:_temp_.cisco.destination_username}\)? )?duration (?:%{DURATION:_temp_.duration_hms} bytes %{NUMBER:network.bytes})
         - ^Teardown %{NOTSPACE:network.transport} connection for faddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSDESTIPORHOST}/%{NUMBER}\s*(?:\(?%{CISCO_USER:_temp_.cisco.destination_username}\)? )?gaddr (?:%{NOTCOLON}:)?%{MAPPEDSRC}/%{NUMBER} laddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSSOURCEIPORHOST}/%{NUMBER}\s*(?:\(%{CISCO_USER:_temp_.cisco.source_username}\))?(\s*type %{NUMBER:_temp_.cisco.icmp_type} code %{NUMBER:_temp_.cisco.icmp_code})?
       pattern_definitions:
-        HOSTNAME: "\\b(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62})(?:\\.(?:[0-9A-Za-z][0-9A-Za-z-_]{0,62}))*(\\.?|\\b)"
+        HOSTNAME: '\b(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62})(?:\.(?:[0-9A-Za-z][0-9A-Za-z\-_]{0,62}))*(\.?|\b)'
         IPORHOST: "(?:%{IP}|%{HOSTNAME})"
         NOTCOLON: "[^:]*"
         ECSSOURCEIPORHOST: "(?:%{IP:source.address}|%{HOSTNAME:source.domain})"