diff --git a/pycti/entities/opencti_stix_cyber_observable.py b/pycti/entities/opencti_stix_cyber_observable.py
index cb69cece1..d0c1b794e 100644
--- a/pycti/entities/opencti_stix_cyber_observable.py
+++ b/pycti/entities/opencti_stix_cyber_observable.py
@@ -809,6 +809,18 @@ def create(self, **kwargs):
                     ),
                 }
             elif type == "Software":
+                if (
+                    "x_opencti_product" not in observable_data
+                    and self.opencti.get_attribute_in_extension(
+                        "x_opencti_product", observable_data
+                    )
+                    is not None
+                ):
+                    observable_data["x_opencti_product"] = (
+                        self.opencti.get_attribute_in_extension(
+                            "x_opencti_product", observable_data
+                        )
+                    )
                 input_variables["Software"] = {
                     "name": (
                         observable_data["name"] if "name" in observable_data else None
@@ -832,6 +844,11 @@ def create(self, **kwargs):
                         if "version" in observable_data
                         else None
                     ),
+                    "x_opencti_product": (
+                        observable_data["x_opencti_product"]
+                        if "x_opencti_product" in observable_data
+                        else None
+                    ),
                 }
             elif type == "Url":
                 input_variables["Url"] = {
diff --git a/pycti/entities/opencti_vulnerability.py b/pycti/entities/opencti_vulnerability.py
index b9b118012..2d6a55d05 100644
--- a/pycti/entities/opencti_vulnerability.py
+++ b/pycti/entities/opencti_vulnerability.py
@@ -150,6 +150,7 @@ def __init__(self, opencti):
             x_opencti_cvss_v4_availability_impact_s
             x_opencti_cvss_v4_exploit_maturity
             x_opencti_cwe
+            x_opencti_first_seen_active
             x_opencti_cisa_kev
             x_opencti_epss_score
             x_opencti_epss_percentile
@@ -452,6 +453,7 @@ def create(self, **kwargs):
         x_opencti_epss_score = kwargs.get("x_opencti_epss_score", None)
         x_opencti_epss_percentile = kwargs.get("x_opencti_epss_percentile", None)
         x_opencti_score = kwargs.get("x_opencti_score", None)
+        x_opencti_first_seen_active = kwargs.get("x_opencti_first_seen_active", None)
         x_opencti_stix_ids = kwargs.get("x_opencti_stix_ids", None)
         granted_refs = kwargs.get("objectOrganization", None)
         x_opencti_workflow_id = kwargs.get("x_opencti_workflow_id", None)
@@ -538,6 +540,7 @@ def create(self, **kwargs):
                         "x_opencti_epss_score": x_opencti_epss_score,
                         "x_opencti_epss_percentile": x_opencti_epss_percentile,
                         "x_opencti_score": x_opencti_score,
+                        "x_opencti_first_seen_active": x_opencti_first_seen_active,
                         "x_opencti_stix_ids": x_opencti_stix_ids,
                         "x_opencti_workflow_id": x_opencti_workflow_id,
                         "update": update,
@@ -867,6 +870,12 @@ def import_from_stix2(self, **kwargs):
                 stix_object["x_opencti_score"] = (
                     self.opencti.get_attribute_in_extension("score", stix_object)
                 )
+            if "x_opencti_first_seen_active" not in stix_object:
+                stix_object["x_opencti_first_seen_active"] = (
+                    self.opencti.get_attribute_in_extension(
+                        "first_seen_active", stix_object
+                    )
+                )
 
             return self.create(
                 stix_id=stix_object["id"],
@@ -1158,6 +1167,11 @@ def import_from_stix2(self, **kwargs):
                     if "x_opencti_score" in stix_object
                     else None
                 ),
+                x_opencti_first_seen_active=(
+                    stix_object["x_opencti_first_seen_active"]
+                    if "x_opencti_first_seen_active" in stix_object
+                    else None
+                ),
                 update=update,
             )
         else:
diff --git a/pycti/entities/stix_cyber_observable/opencti_stix_cyber_observable_properties.py b/pycti/entities/stix_cyber_observable/opencti_stix_cyber_observable_properties.py
index 70f95a289..176de35f7 100644
--- a/pycti/entities/stix_cyber_observable/opencti_stix_cyber_observable_properties.py
+++ b/pycti/entities/stix_cyber_observable/opencti_stix_cyber_observable_properties.py
@@ -215,6 +215,7 @@
         languages
         vendor
         version
+        x_opencti_product
     }
     ... on Url {
         value
@@ -519,6 +520,7 @@
         languages
         vendor
         version
+        x_opencti_product
     }
     ... on Url {
         value