diff --git a/backend/src/services/certificate-request/certificate-request-service.test.ts b/backend/src/services/certificate-request/certificate-request-service.test.ts
index 66d5c613b..10c8b73cf 100644
--- a/backend/src/services/certificate-request/certificate-request-service.test.ts
+++ b/backend/src/services/certificate-request/certificate-request-service.test.ts
@@ -225,6 +225,10 @@ describe("CertificateRequestService", () => {
           {
             action: ProjectPermissionCertificateActions.Read,
             subject: ProjectPermissionSub.Certificates
+          },
+          {
+            action: ProjectPermissionCertificateActions.ReadPrivateKey,
+            subject: ProjectPermissionSub.Certificates
           }
         ])
       };
@@ -319,7 +323,7 @@ describe("CertificateRequestService", () => {
       });
     });
 
-    it("should get certificate from request successfully when private key access is denied", async () => {
+    it("should get certificate from request successfully when user lacks private key permission", async () => {
       const mockPermission = {
         permission: createMongoAbility<ProjectPermissionSet>([
           {
@@ -349,7 +353,6 @@ describe("CertificateRequestService", () => {
       (mockPermissionService.getProjectPermission as any).mockResolvedValue(mockPermission);
       (mockCertificateRequestDAL.findByIdWithCertificate as any).mockResolvedValue(mockRequestWithCert);
       (mockCertificateService.getCertBody as any).mockResolvedValue(mockCertBody);
-      (mockCertificateService.getCertPrivateKey as any).mockRejectedValue(new Error("Private key access denied"));
 
       const result = await service.getCertificateFromRequest(mockGetData);
 
@@ -363,8 +366,68 @@ describe("CertificateRequestService", () => {
         actorAuthMethod: AuthMethod.EMAIL,
         actorOrgId: "550e8400-e29b-41d4-a716-446655440002"
       });
+      expect(mockCertificateService.getCertPrivateKey).not.toHaveBeenCalled();
+      expect(result).toEqual({
+        status: CertificateRequestStatus.ISSUED,
+        certificate: "-----BEGIN CERTIFICATE-----\nMOCK_CERT_PEM\n-----END CERTIFICATE-----",
+        privateKey: null,
+        serialNumber: "123456",
+        errorMessage: null,
+        createdAt: mockRequestWithCert.createdAt,
+        updatedAt: mockRequestWithCert.updatedAt
+      });
+    });
+
+    it("should get certificate from request successfully when user has private key permission but key retrieval fails", async () => {
+      const mockPermission = {
+        permission: createMongoAbility<ProjectPermissionSet>([
+          {
+            action: ProjectPermissionCertificateActions.Read,
+            subject: ProjectPermissionSub.Certificates
+          },
+          {
+            action: ProjectPermissionCertificateActions.ReadPrivateKey,
+            subject: ProjectPermissionSub.Certificates
+          }
+        ])
+      };
+      const mockCertificate = {
+        id: "550e8400-e29b-41d4-a716-446655440009",
+        serialNumber: "123456",
+        commonName: "test.example.com"
+      };
+      const mockRequestWithCert = {
+        id: "550e8400-e29b-41d4-a716-446655440005",
+        projectId: "550e8400-e29b-41d4-a716-446655440003",
+        status: CertificateRequestStatus.ISSUED,
+        certificate: mockCertificate,
+        errorMessage: null,
+        createdAt: new Date(),
+        updatedAt: new Date()
+      };
+      const mockCertBody = {
+        certificate: "-----BEGIN CERTIFICATE-----\nMOCK_CERT_PEM\n-----END CERTIFICATE-----"
+      };
+
+      (mockPermissionService.getProjectPermission as any).mockResolvedValue(mockPermission);
+      (mockCertificateRequestDAL.findByIdWithCertificate as any).mockResolvedValue(mockRequestWithCert);
+      (mockCertificateService.getCertBody as any).mockResolvedValue(mockCertBody);
+      (mockCertificateService.getCertPrivateKey as any).mockRejectedValue(new Error("Private key not found"));
+
+      const result = await service.getCertificateFromRequest(mockGetData);
+
+      expect(mockCertificateRequestDAL.findByIdWithCertificate).toHaveBeenCalledWith(
+        "550e8400-e29b-41d4-a716-446655440005"
+      );
+      expect(mockCertificateService.getCertBody).toHaveBeenCalledWith({
+        id: "550e8400-e29b-41d4-a716-446655440009",
+        actor: ActorType.USER,
+        actorId: "550e8400-e29b-41d4-a716-446655440001",
+        actorAuthMethod: AuthMethod.EMAIL,
+        actorOrgId: "550e8400-e29b-41d4-a716-446655440002"
+      });
       expect(mockCertificateService.getCertPrivateKey).toHaveBeenCalledWith({
-        id: "550e8400-e29b-41d4-a716-446655440008",
+        id: "550e8400-e29b-41d4-a716-446655440009",
         actor: ActorType.USER,
         actorId: "550e8400-e29b-41d4-a716-446655440001",
         actorAuthMethod: AuthMethod.EMAIL,
diff --git a/backend/src/services/certificate-request/certificate-request-service.ts b/backend/src/services/certificate-request/certificate-request-service.ts
index 71129aba7..46cd49476 100644
--- a/backend/src/services/certificate-request/certificate-request-service.ts
+++ b/backend/src/services/certificate-request/certificate-request-service.ts
@@ -218,20 +218,25 @@ export const certificateRequestServiceFactory = ({
       actorOrgId
     });
 
-    // Try to get private key (may fail if user doesn't have permission)
+    const canReadPrivateKey = permission.can(
+      ProjectPermissionCertificateActions.ReadPrivateKey,
+      ProjectPermissionSub.Certificates
+    );
+
     let privateKey: string | null = null;
-    try {
-      const certPrivateKey = await certificateService.getCertPrivateKey({
-        id: certificateRequest.certificate.id,
-        actor,
-        actorId,
-        actorAuthMethod,
-        actorOrgId
-      });
-      privateKey = certPrivateKey.certPrivateKey;
-    } catch (error) {
-      // Private key access denied - continue without it
-      privateKey = null;
+    if (canReadPrivateKey) {
+      try {
+        const certPrivateKey = await certificateService.getCertPrivateKey({
+          id: certificateRequest.certificate.id,
+          actor,
+          actorId,
+          actorAuthMethod,
+          actorOrgId
+        });
+        privateKey = certPrivateKey.certPrivateKey;
+      } catch (error) {
+        privateKey = null;
+      }
     }
 
     return {
diff --git a/backend/src/services/certificate-v3/certificate-v3-service.ts b/backend/src/services/certificate-v3/certificate-v3-service.ts
index af6162d70..c20412537 100644
--- a/backend/src/services/certificate-v3/certificate-v3-service.ts
+++ b/backend/src/services/certificate-v3/certificate-v3-service.ts
@@ -1001,11 +1001,27 @@ export const certificateV3ServiceFactory = ({
         });
       }
 
+      const { permission } = await permissionService.getProjectPermission({
+        actor,
+        actorId,
+        projectId: profile.projectId,
+        actorAuthMethod,
+        actorOrgId,
+        actionProjectType: ActionProjectType.CertificateManager
+      });
+
+      const canReadPrivateKey = permission.can(
+        ProjectPermissionCertificateActions.ReadPrivateKey,
+        ProjectPermissionSub.Certificates
+      );
+
+      const privateKeyForResponse = canReadPrivateKey ? selfSignedResult.privateKey.toString("utf8") : undefined;
+
       return {
         certificate: selfSignedResult.certificate.toString("utf8"),
         issuingCaCertificate: "",
         certificateChain: selfSignedResult.certificate.toString("utf8"),
-        privateKey: selfSignedResult.privateKey.toString("utf8"),
+        privateKey: privateKeyForResponse,
         serialNumber: selfSignedResult.serialNumber,
         certificateId: certificateData.id,
         certificateRequestId,
@@ -1102,11 +1118,28 @@ export const certificateV3ServiceFactory = ({
       finalCertificateChain = removeRootCaFromChain(finalCertificateChain);
     }
 
+    // Check if user has permission to read private key
+    const { permission } = await permissionService.getProjectPermission({
+      actor,
+      actorId,
+      projectId: profile.projectId,
+      actorAuthMethod,
+      actorOrgId,
+      actionProjectType: ActionProjectType.CertificateManager
+    });
+
+    const canReadPrivateKey = permission.can(
+      ProjectPermissionCertificateActions.ReadPrivateKey,
+      ProjectPermissionSub.Certificates
+    );
+
+    const privateKeyForResponse = canReadPrivateKey ? bufferToString(privateKey) : undefined;
+
     return {
       certificate: bufferToString(certificate),
       issuingCaCertificate: bufferToString(issuingCaCertificate),
       certificateChain: finalCertificateChain,
-      privateKey: bufferToString(privateKey),
+      privateKey: privateKeyForResponse,
       serialNumber,
       certificateId: cert.id,
       certificateRequestId,