diff --git a/dojo/db_migrations/0255_remove_system_settings_product_grade.py b/dojo/db_migrations/0255_remove_system_settings_product_grade.py
new file mode 100644
index 00000000000..c39857bda0a
--- /dev/null
+++ b/dojo/db_migrations/0255_remove_system_settings_product_grade.py
@@ -0,0 +1,17 @@
+# Generated by Django 5.2.9 on 2026-01-09 23:56
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dojo', '0254_remove_vulnerability_id_template_model'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='system_settings',
+            name='product_grade',
+        ),
+    ]
diff --git a/dojo/fixtures/defect_dojo_sample_data.json b/dojo/fixtures/defect_dojo_sample_data.json
index a9dbc052b5d..fe8b78b2229 100644
--- a/dojo/fixtures/defect_dojo_sample_data.json
+++ b/dojo/fixtures/defect_dojo_sample_data.json
@@ -814,7 +814,6 @@
     "url_prefix": "",
     "team_name": "",
     "enable_product_grade": true,
-    "product_grade": "def grade_product(crit, high, med, low):\r\n    health=100\r\n    if crit > 0:\r\n        health = 40\r\n        health = health - ((crit - 1) * 5)\r\n    if high > 0:\r\n        if health == 100:\r\n            health = 60\r\n        health = health - ((high - 1) * 3)\r\n    if med > 0:\r\n        if health == 100:\r\n            health = 80\r\n        health = health - ((med - 1) * 2)\r\n    if low > 0:\r\n        if health == 100:\r\n            health = 95\r\n        health = health - low\r\n\r\n    if health < 5:\r\n        health = 5\r\n\r\n    return health",
     "product_grade_a": 90,
     "product_grade_b": 80,
     "product_grade_c": 70,
diff --git a/dojo/fixtures/dojo_testdata.json b/dojo/fixtures/dojo_testdata.json
index d5b2d4f4538..26148621eaf 100644
--- a/dojo/fixtures/dojo_testdata.json
+++ b/dojo/fixtures/dojo_testdata.json
@@ -242,7 +242,6 @@
       "mail_notifications_to": "",
       "enable_jira": false,
       "enable_product_grade": true,
-      "product_grade": "def grade_product(crit, high, med, low):\r\n    health=100\r\n    if crit > 0:\r\n        health = 40\r\n        health = health - ((crit - 1) * 5)\r\n    if high > 0:\r\n        if health == 100:\r\n            health = 60\r\n        health = health - ((high - 1) * 3)\r\n    if med > 0:\r\n        if health == 100:\r\n            health = 80\r\n        health = health - ((med - 1) * 2)\r\n    if low > 0:\r\n        if health == 100:\r\n            health = 95\r\n        health = health - low\r\n\r\n    if health < 5:\r\n        health = 5\r\n\r\n    return health",
       "product_grade_a": 90,
       "product_grade_b": 80,
       "product_grade_c": 70,
diff --git a/dojo/fixtures/system_settings.json b/dojo/fixtures/system_settings.json
index 37033d658f0..eca1b4cc1be 100644
--- a/dojo/fixtures/system_settings.json
+++ b/dojo/fixtures/system_settings.json
@@ -6,7 +6,6 @@
     "enable_deduplication": false,
     "enable_jira": false,
     "url_prefix": "",
-    "product_grade": "def grade_product(crit, high, med, low):\r\n    health=100\r\n    if crit > 0:\r\n        health = 40\r\n        health = health - ((crit - 1) * 5)\r\n    if high > 0:\r\n        if health == 100:\r\n            health = 60\r\n        health = health - ((high - 1) * 3)\r\n    if med > 0:\r\n        if health == 100:\r\n            health = 80\r\n        health = health - ((med - 1) * 2)\r\n    if low > 0:\r\n        if health == 100:\r\n            health = 95\r\n        health = health - low\r\n\r\n    if health < 5:\r\n        health = 5\r\n\r\n    return health",
     "product_grade_a": 90,
     "product_grade_b": 80,
     "product_grade_c": 70,
diff --git a/dojo/forms.py b/dojo/forms.py
index a73abb00ce6..b2b39509933 100644
--- a/dojo/forms.py
+++ b/dojo/forms.py
@@ -3129,7 +3129,7 @@ def clean(self):
 
     class Meta:
         model = System_Settings
-        exclude = ["product_grade"]
+        fields = "__all__"
 
 
 class BenchmarkForm(forms.ModelForm):
diff --git a/dojo/management/commands/system_settings.py b/dojo/management/commands/system_settings.py
deleted file mode 100644
index eace6a7e2b5..00000000000
--- a/dojo/management/commands/system_settings.py
+++ /dev/null
@@ -1,35 +0,0 @@
-from django.core.management.base import BaseCommand
-
-from dojo.models import System_Settings
-
-
-class Command(BaseCommand):
-    help = "Updates product grade calculation"
-
-    def handle(self, *args, **options):
-        code = """def grade_product(crit, high, med, low):
-            health=100
-            if crit > 0:
-                health = 40
-                health = health - ((crit - 1) * 5)
-            if high > 0:
-                if health == 100:
-                    health = 60
-                health = health - ((high - 1) * 3)
-            if med > 0:
-                if health == 100:
-                    health = 80
-                health = health - ((med - 1) * 2)
-            if low > 0:
-                if health == 100:
-                    health = 95
-                health = health - low
-
-            if health < 5:
-                health = 5
-
-            return health
-            """
-        system_settings = System_Settings.objects.get(id=1)
-        system_settings.product_grade = code
-        system_settings.save()
diff --git a/dojo/models.py b/dojo/models.py
index 57ce9c18e72..7ab85e710d9 100644
--- a/dojo/models.py
+++ b/dojo/models.py
@@ -441,7 +441,6 @@ class System_Settings(models.Model):
     url_prefix = models.CharField(max_length=300, default="", blank=True, help_text=_("URL prefix if DefectDojo is installed in it's own virtual subdirectory."))
     team_name = models.CharField(max_length=100, default="", blank=True)
     enable_product_grade = models.BooleanField(default=False, verbose_name=_("Enable Product Grading"), help_text=_("Displays a grade letter next to a product to show the overall health."))
-    product_grade = models.CharField(max_length=800, blank=True)
     product_grade_a = models.IntegerField(default=90,
                                           verbose_name=_("Grade A"),
                                           help_text=_("Percentage score for an "
@@ -685,19 +684,6 @@ def clean(self):
                 })
 
 
-class SystemSettingsFormAdmin(forms.ModelForm):
-    product_grade = forms.CharField(widget=forms.Textarea)
-
-    class Meta:
-        model = System_Settings
-        fields = ["product_grade"]
-
-
-class System_SettingsAdmin(admin.ModelAdmin):
-    form = SystemSettingsFormAdmin
-    fields = ("product_grade",)
-
-
 def get_current_date():
     return timezone.now().date()
 
@@ -4854,7 +4840,7 @@ def __str__(self):
 admin.site.register(Tool_Type)
 admin.site.register(Cred_User)
 admin.site.register(Cred_Mapping)
-admin.site.register(System_Settings, System_SettingsAdmin)
+admin.site.register(System_Settings)
 admin.site.register(SLA_Configuration)
 admin.site.register(CWE)
 admin.site.register(Regulation)
diff --git a/dojo/utils.py b/dojo/utils.py
index 33e99846b81..cba54ac0009 100644
--- a/dojo/utils.py
+++ b/dojo/utils.py
@@ -20,7 +20,6 @@
 import crum
 import cvss
 import vobject
-from asteval import Interpreter
 from auditlog.models import LogEntry
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
@@ -1224,6 +1223,26 @@ def get_setting(setting):
     return getattr(settings, setting)
 
 
+def grade_product(crit, high, med, low):
+    health = 100
+    if crit > 0:
+        health = 40
+        health -= ((crit - 1) * 5)
+    if high > 0:
+        if health == 100:
+            health = 60
+        health -= ((high - 1) * 3)
+    if med > 0:
+        if health == 100:
+            health = 80
+        health -= ((med - 1) * 2)
+    if low > 0:
+        if health == 100:
+            health = 95
+        health -= low
+    return max(health, 5)
+
+
 @dojo_model_to_id
 @dojo_async_task(signature=True)
 @app.task
@@ -1276,17 +1295,14 @@ def calculate_grade_internal(product, *args, **kwargs):
                 medium = severity_count["numerical_severity__count"]
             elif severity_count["severity"] == "Low":
                 low = severity_count["numerical_severity__count"]
-        aeval = Interpreter()
-        aeval(system_settings.product_grade)
-        grade_product = f"grade_product({critical}, {high}, {medium}, {low})"
-        prod_numeric_grade = aeval(grade_product)
-        if prod_numeric_grade != product.prod_numeric_grade:
-            logger.debug("Updating product %s grade from %s to %s", product.id, product.prod_numeric_grade, prod_numeric_grade)
-            product.prod_numeric_grade = prod_numeric_grade
+        grade = grade_product(critical, high, medium, low)
+        if grade != product.prod_numeric_grade:
+            logger.debug("Updating product %s grade from %s to %s", product.id, product.prod_numeric_grade, grade)
+            product.prod_numeric_grade = grade
             super(Product, product).save()
         else:
             # Use %s to safely handle None grades without formatter errors
-            logger.debug("Product %s grade %s is up to date", product.id, prod_numeric_grade)
+            logger.debug("Product %s grade %s is up to date", product.id, product.prod_numeric_grade)
 
 
 def perform_product_grading(product):
diff --git a/unittests/test_importers_performance.py b/unittests/test_importers_performance.py
index 1e7b05d8fe5..26ab5d025ce 100644
--- a/unittests/test_importers_performance.py
+++ b/unittests/test_importers_performance.py
@@ -310,9 +310,9 @@ def test_import_reimport_reimport_performance_pghistory_no_async_with_product_gr
         self.system_settings(enable_product_grade=True)
 
         self._import_reimport_performance(
-            expected_num_queries1=315,
+            expected_num_queries1=320,
             expected_num_async_tasks1=8,
-            expected_num_queries2=241,
+            expected_num_queries2=246,
             expected_num_async_tasks2=19,
             expected_num_queries3=123,
             expected_num_async_tasks3=18,