diff --git a/src/Infrastructure.EntityFramework/NotificationCenter/Configurations/NotificationStatusEntityTypeConfiguration.cs b/src/Infrastructure.EntityFramework/NotificationCenter/Configurations/NotificationStatusEntityTypeConfiguration.cs
index 1207d839d8..c535cd3e84 100644
--- a/src/Infrastructure.EntityFramework/NotificationCenter/Configurations/NotificationStatusEntityTypeConfiguration.cs
+++ b/src/Infrastructure.EntityFramework/NotificationCenter/Configurations/NotificationStatusEntityTypeConfiguration.cs
@@ -13,6 +13,12 @@ public class NotificationStatusEntityTypeConfiguration : IEntityTypeConfiguratio
             .HasKey(ns => new { ns.UserId, ns.NotificationId })
             .IsClustered();
 
+        builder
+            .HasOne(ns => ns.Notification)
+            .WithMany()
+            .HasForeignKey(ns => ns.NotificationId)
+            .OnDelete(DeleteBehavior.Cascade);
+
         builder.ToTable(nameof(NotificationStatus));
     }
 }
diff --git a/src/Sql/NotificationCenter/dbo/Stored Procedures/Notification_MarkAsDeletedByTask.sql b/src/Sql/NotificationCenter/dbo/Stored Procedures/Notification_MarkAsDeletedByTask.sql
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/Sql/dbo/Tables/NotificationStatus.sql b/src/Sql/dbo/Tables/NotificationStatus.sql
index 2f68e2b2f7..2ccb0e0a8a 100644
--- a/src/Sql/dbo/Tables/NotificationStatus.sql
+++ b/src/Sql/dbo/Tables/NotificationStatus.sql
@@ -5,11 +5,10 @@ CREATE TABLE [dbo].[NotificationStatus]
     [ReadDate] DATETIME2 (7) NULL,
     [DeletedDate] DATETIME2 (7) NULL,
     CONSTRAINT [PK_NotificationStatus] PRIMARY KEY CLUSTERED ([NotificationId] ASC, [UserId] ASC),
-    CONSTRAINT [FK_NotificationStatus_Notification] FOREIGN KEY ([NotificationId]) REFERENCES [dbo].[Notification] ([Id]),
+    CONSTRAINT [FK_NotificationStatus_Notification] FOREIGN KEY ([NotificationId]) REFERENCES [dbo].[Notification] ([Id]) ON DELETE CASCADE,
     CONSTRAINT [FK_NotificationStatus_User] FOREIGN KEY ([UserId]) REFERENCES [dbo].[User] ([Id])
 );
 
 GO
 CREATE NONCLUSTERED INDEX [IX_NotificationStatus_UserId]
     ON [dbo].[NotificationStatus]([UserId] ASC);
-
diff --git a/test/Infrastructure.IntegrationTest/Vault/Repositories/CipherRepositoryTests.cs b/test/Infrastructure.IntegrationTest/Vault/Repositories/CipherRepositoryTests.cs
index 288752011f..0a186e43be 100644
--- a/test/Infrastructure.IntegrationTest/Vault/Repositories/CipherRepositoryTests.cs
+++ b/test/Infrastructure.IntegrationTest/Vault/Repositories/CipherRepositoryTests.cs
@@ -5,6 +5,8 @@ using Bit.Core.Billing.Enums;
 using Bit.Core.Entities;
 using Bit.Core.Enums;
 using Bit.Core.Models.Data;
+using Bit.Core.NotificationCenter.Entities;
+using Bit.Core.NotificationCenter.Repositories;
 using Bit.Core.Repositories;
 using Bit.Core.Vault.Entities;
 using Bit.Core.Vault.Enums;
@@ -976,8 +978,11 @@ public class CipherRepositoryTests
     [DatabaseTheory, DatabaseData]
     public async Task DeleteCipherWithSecurityTaskAsync_Works(
         IOrganizationRepository organizationRepository,
+        IUserRepository userRepository,
         ICipherRepository cipherRepository,
-        ISecurityTaskRepository securityTaskRepository)
+        ISecurityTaskRepository securityTaskRepository,
+        INotificationRepository notificationRepository,
+        INotificationStatusRepository notificationStatusRepository)
     {
         var organization = await organizationRepository.CreateAsync(new Organization
         {
@@ -987,6 +992,14 @@ public class CipherRepositoryTests
             BillingEmail = ""
         });
 
+        var user = await userRepository.CreateAsync(new User
+        {
+            Name = "Test User",
+            Email = $"test+{Guid.NewGuid()}@email.com",
+            ApiKey = "TEST",
+            SecurityStamp = "stamp",
+        });
+
         var cipher1 = new Cipher { Type = CipherType.Login, OrganizationId = organization.Id, Data = "", };
         await cipherRepository.CreateAsync(cipher1);
 
@@ -1012,6 +1025,20 @@ public class CipherRepositoryTests
         };
 
         await securityTaskRepository.CreateManyAsync(tasks);
+        var notification = await notificationRepository.CreateAsync(new Notification
+        {
+            OrganizationId = organization.Id,
+            UserId = user.Id,
+            TaskId = tasks[1].Id,
+            CreationDate = DateTime.UtcNow,
+            RevisionDate = DateTime.UtcNow,
+        });
+        await notificationStatusRepository.CreateAsync(new NotificationStatus
+        {
+            NotificationId = notification.Id,
+            UserId = user.Id,
+            ReadDate = DateTime.UtcNow,
+        });
 
         // Delete cipher with pending security task
         await cipherRepository.DeleteAsync(cipher1);
diff --git a/util/Migrator/DbScripts/2025-06-26_01_CascadeDeleteNotificationStatus.sql b/util/Migrator/DbScripts/2025-06-26_01_CascadeDeleteNotificationStatus.sql
new file mode 100644
index 0000000000..474ac14a7a
--- /dev/null
+++ b/util/Migrator/DbScripts/2025-06-26_01_CascadeDeleteNotificationStatus.sql
@@ -0,0 +1,10 @@
+BEGIN
+    IF EXISTS (SELECT 1 FROM sys.foreign_keys WHERE name = N'FK_NotificationStatus_Notification')
+    BEGIN
+      ALTER TABLE [dbo].[NotificationStatus] DROP CONSTRAINT [FK_NotificationStatus_Notification]
+    END
+
+    ALTER TABLE [dbo].[NotificationStatus]
+      ADD CONSTRAINT [FK_NotificationStatus_Notification] FOREIGN KEY ([NotificationId]) REFERENCES [dbo].[Notification]([Id]) ON DELETE CASCADE
+END
+GO