diff --git a/monkey/common/agent_configuration/agent_sub_configuration_schemas.py b/monkey/common/agent_configuration/agent_sub_configuration_schemas.py
index 15fdd6ba9..81dc6f53b 100644
--- a/monkey/common/agent_configuration/agent_sub_configuration_schemas.py
+++ b/monkey/common/agent_configuration/agent_sub_configuration_schemas.py
@@ -115,7 +115,7 @@ class NetworkScanConfigurationSchema(Schema):
 
 
 class ExploitationOptionsConfigurationSchema(Schema):
-    http_ports = fields.List(fields.Int())
+    http_ports = fields.List(fields.Int(validate=validate.Range(min=0, max=65535)))
 
     @post_load
     @freeze_lists