diff --git a/backend/src/server/routes/index.ts b/backend/src/server/routes/index.ts
index 7b8ac6fcc..f0c3cbd5b 100644
--- a/backend/src/server/routes/index.ts
+++ b/backend/src/server/routes/index.ts
@@ -86,6 +86,7 @@ import { certificateDALFactory } from "@app/services/certificate/certificate-dal
 import { certificateServiceFactory } from "@app/services/certificate/certificate-service";
 import { certificateAuthorityCertDALFactory } from "@app/services/certificate-authority/certificate-authority-cert-dal";
 import { certificateAuthorityDALFactory } from "@app/services/certificate-authority/certificate-authority-dal";
+import { certificateAuthorityEstConfigDALFactory } from "@app/services/certificate-authority/certificate-authority-est-config-dal";
 import { certificateAuthorityQueueFactory } from "@app/services/certificate-authority/certificate-authority-queue";
 import { certificateAuthoritySecretDALFactory } from "@app/services/certificate-authority/certificate-authority-secret-dal";
 import { certificateAuthorityServiceFactory } from "@app/services/certificate-authority/certificate-authority-service";
@@ -585,6 +586,7 @@ export const registerRoutes = async (
   const certificateAuthorityCertDAL = certificateAuthorityCertDALFactory(db);
   const certificateAuthoritySecretDAL = certificateAuthoritySecretDALFactory(db);
   const certificateAuthorityCrlDAL = certificateAuthorityCrlDALFactory(db);
+  const certificateAuthorityEstConfigDAL = certificateAuthorityEstConfigDALFactory(db);
 
   const certificateDAL = certificateDALFactory(db);
   const certificateBodyDAL = certificateBodyDALFactory(db);
@@ -625,7 +627,8 @@ export const registerRoutes = async (
     certificateBodyDAL,
     projectDAL,
     kmsService,
-    permissionService
+    permissionService,
+    certificateAuthorityEstConfigDAL
   });
 
   const certificateAuthorityCrlService = certificateAuthorityCrlServiceFactory({
diff --git a/backend/src/server/routes/v1/certificate-authority-router.ts b/backend/src/server/routes/v1/certificate-authority-router.ts
index 3148d8451..1306dd657 100644
--- a/backend/src/server/routes/v1/certificate-authority-router.ts
+++ b/backend/src/server/routes/v1/certificate-authority-router.ts
@@ -2,6 +2,7 @@ import ms from "ms";
 import { z } from "zod";
 
 import { CertificateAuthoritiesSchema } from "@app/db/schemas";
+import { CertificateAuthorityEstConfigsSchema } from "@app/db/schemas/certificate-authority-est-configs";
 import { EventType } from "@app/ee/services/audit-log/audit-log-types";
 import { CERTIFICATE_AUTHORITIES } from "@app/lib/api-docs";
 import { readLimit, writeLimit } from "@app/server/config/rateLimiter";
@@ -697,4 +698,128 @@ export const registerCaRouter = async (server: FastifyZodProvider) => {
       };
     }
   });
+
+  server.route({
+    method: "POST",
+    url: "/:caId/est-config",
+    config: {
+      rateLimit: writeLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      description: "Create CA EST configuration",
+      params: z.object({
+        caId: z.string().trim()
+      }),
+      body: z.object({
+        caChain: z.string().trim().min(1),
+        passphrase: z.string().min(1),
+        isEnabled: z.boolean().default(true)
+      }),
+      response: {
+        200: z.object({
+          caEstConfig: CertificateAuthorityEstConfigsSchema.pick({
+            caId: true,
+            isEnabled: true
+          })
+        })
+      }
+    },
+    handler: async (req) => {
+      const caEstConfig = await server.services.certificateAuthority.createCaEstConfiguration({
+        caId: req.params.caId,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId,
+        ...req.body
+      });
+
+      return {
+        caEstConfig
+      };
+    }
+  });
+
+  server.route({
+    method: "PATCH",
+    url: "/:caId/est-config",
+    config: {
+      rateLimit: writeLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      description: "Update CA EST configuration",
+      params: z.object({
+        caId: z.string().trim()
+      }),
+      body: z.object({
+        caChain: z.string().trim().min(1).optional(),
+        passphrase: z.string().min(1).optional(),
+        isEnabled: z.boolean().optional()
+      }),
+      response: {
+        200: z.object({
+          caEstConfig: CertificateAuthorityEstConfigsSchema.pick({
+            caId: true,
+            isEnabled: true
+          })
+        })
+      }
+    },
+    handler: async (req) => {
+      const caEstConfig = await server.services.certificateAuthority.updateCaEstConfiguration({
+        caId: req.params.caId,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId,
+        ...req.body
+      });
+
+      return {
+        caEstConfig
+      };
+    }
+  });
+
+  server.route({
+    method: "GET",
+    url: "/:caId/est-config",
+    config: {
+      rateLimit: readLimit
+    },
+    onRequest: verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN]),
+    schema: {
+      description: "Get CA EST configuration",
+      params: z.object({
+        caId: z.string().trim()
+      }),
+      response: {
+        200: z.object({
+          caEstConfig: CertificateAuthorityEstConfigsSchema.pick({
+            caId: true,
+            isEnabled: true
+          }).merge(
+            z.object({
+              caChain: z.string()
+            })
+          )
+        })
+      }
+    },
+    handler: async (req) => {
+      const caEstConfig = await server.services.certificateAuthority.getCaEstConfiguration({
+        caId: req.params.caId,
+        actor: req.permission.type,
+        actorId: req.permission.id,
+        actorAuthMethod: req.permission.authMethod,
+        actorOrgId: req.permission.orgId
+      });
+
+      return {
+        caEstConfig
+      };
+    }
+  });
 };
diff --git a/backend/src/services/certificate-authority/certificate-authority-service.ts b/backend/src/services/certificate-authority/certificate-authority-service.ts
index c5d5a053c..89223babb 100644
--- a/backend/src/services/certificate-authority/certificate-authority-service.ts
+++ b/backend/src/services/certificate-authority/certificate-authority-service.ts
@@ -42,6 +42,7 @@ import {
   TGetCaCertsDTO,
   TGetCaCsrDTO,
   TGetCaDTO,
+  TGetCaEstConfigurationDTO,
   TImportCertToCaDTO,
   TIssueCertFromCaDTO,
   TRenewCaCertDTO,
@@ -1534,6 +1535,62 @@ export const certificateAuthorityServiceFactory = ({
     return estConfig;
   };
 
+  const getCaEstConfiguration = async ({
+    caId,
+    actorId,
+    actorAuthMethod,
+    actor,
+    actorOrgId
+  }: TGetCaEstConfigurationDTO) => {
+    const ca = await certificateAuthorityDAL.findById(caId);
+    if (!ca) {
+      throw new NotFoundError({ message: "CA not found" });
+    }
+
+    const { permission } = await permissionService.getProjectPermission(
+      actor,
+      actorId,
+      ca.projectId,
+      actorAuthMethod,
+      actorOrgId
+    );
+
+    ForbiddenError.from(permission).throwUnlessCan(
+      ProjectPermissionActions.Edit,
+      ProjectPermissionSub.CertificateAuthorities
+    );
+
+    const caEstConfig = await certificateAuthorityEstConfigDAL.findOne({
+      caId
+    });
+
+    if (!caEstConfig) {
+      throw new NotFoundError({
+        message: "CA EST Config not found"
+      });
+    }
+
+    const certificateManagerKmsId = await getProjectKmsCertificateKeyId({
+      projectId: ca.projectId,
+      projectDAL,
+      kmsService
+    });
+
+    const kmsDecryptor = await kmsService.decryptWithKmsKey({
+      kmsId: certificateManagerKmsId
+    });
+
+    const decryptedCaChain = await kmsDecryptor({
+      cipherTextBlob: caEstConfig.encryptedCaChain
+    });
+
+    return {
+      caId,
+      isEnabled: caEstConfig.isEnabled,
+      caChain: decryptedCaChain.toString()
+    };
+  };
+
   return {
     createCa,
     getCaById,
@@ -1548,6 +1605,7 @@ export const certificateAuthorityServiceFactory = ({
     issueCertFromCa,
     signCertFromCa,
     createCaEstConfiguration,
-    updateCaEstConfiguration
+    updateCaEstConfiguration,
+    getCaEstConfiguration
   };
 };
diff --git a/backend/src/services/certificate-authority/certificate-authority-types.ts b/backend/src/services/certificate-authority/certificate-authority-types.ts
index 48db75557..cbe552b08 100644
--- a/backend/src/services/certificate-authority/certificate-authority-types.ts
+++ b/backend/src/services/certificate-authority/certificate-authority-types.ts
@@ -180,3 +180,7 @@ export type TUpdateCaEstConfigurationDTO = {
   passphrase?: string;
   isEnabled?: boolean;
 } & Omit<TProjectPermission, "projectId">;
+
+export type TGetCaEstConfigurationDTO = {
+  caId: string;
+} & Omit<TProjectPermission, "projectId">;
diff --git a/frontend/src/hooks/api/ca/index.tsx b/frontend/src/hooks/api/ca/index.tsx
index 45e675d4b..6d184f6ce 100644
--- a/frontend/src/hooks/api/ca/index.tsx
+++ b/frontend/src/hooks/api/ca/index.tsx
@@ -1,10 +1,20 @@
-export { CaRenewalType,CaStatus, CaType } from "./enums";
+export { CaRenewalType, CaStatus, CaType } from "./enums";
 export {
   useCreateCa,
+  useCreateCaEstConfig,
   useCreateCertificate,
   useDeleteCa,
   useImportCaCertificate,
   useRenewCa,
   useSignIntermediate,
-  useUpdateCa} from "./mutations";
-export { useGetCaById, useGetCaCert, useGetCaCerts, useGetCaCrl, useGetCaCsr } from "./queries";
+  useUpdateCa,
+  useUpdateCaEstConfig
+} from "./mutations";
+export {
+  useGetCaById,
+  useGetCaCert,
+  useGetCaCerts,
+  useGetCaCrl,
+  useGetCaCsr,
+  useGetCaEstConfig
+} from "./queries";
diff --git a/frontend/src/hooks/api/ca/mutations.tsx b/frontend/src/hooks/api/ca/mutations.tsx
index 54109adfc..7a4952464 100644
--- a/frontend/src/hooks/api/ca/mutations.tsx
+++ b/frontend/src/hooks/api/ca/mutations.tsx
@@ -7,6 +7,7 @@ import { caKeys } from "./queries";
 import {
   TCertificateAuthority,
   TCreateCaDTO,
+  TCreateCaEstConfigDTO,
   TCreateCertificateDTO,
   TCreateCertificateResponse,
   TDeleteCaDTO,
@@ -16,7 +17,9 @@ import {
   TRenewCaResponse,
   TSignIntermediateDTO,
   TSignIntermediateResponse,
-  TUpdateCaDTO} from "./types";
+  TUpdateCaDTO,
+  TUpdateCaEstConfigDTO
+} from "./types";
 
 export const useCreateCa = () => {
   const queryClient = useQueryClient();
@@ -130,3 +133,29 @@ export const useRenewCa = () => {
     }
   });
 };
+
+export const useCreateCaEstConfig = () => {
+  const queryClient = useQueryClient();
+  return useMutation<{}, {}, TCreateCaEstConfigDTO>({
+    mutationFn: async (body) => {
+      const { data } = await apiRequest.post(`/api/v1/pki/ca/${body.caId}/est-config`, body);
+      return data;
+    },
+    onSuccess: (_, { caId }) => {
+      queryClient.invalidateQueries(caKeys.getCaEstConfig(caId));
+    }
+  });
+};
+
+export const useUpdateCaEstConfig = () => {
+  const queryClient = useQueryClient();
+  return useMutation<{}, {}, TUpdateCaEstConfigDTO>({
+    mutationFn: async (body) => {
+      const { data } = await apiRequest.patch(`/api/v1/pki/ca/${body.caId}/est-config`, body);
+      return data;
+    },
+    onSuccess: (_, { caId }) => {
+      queryClient.invalidateQueries(caKeys.getCaEstConfig(caId));
+    }
+  });
+};
diff --git a/frontend/src/hooks/api/ca/queries.tsx b/frontend/src/hooks/api/ca/queries.tsx
index 278c335ca..d4eb8a8ae 100644
--- a/frontend/src/hooks/api/ca/queries.tsx
+++ b/frontend/src/hooks/api/ca/queries.tsx
@@ -2,14 +2,15 @@ import { useQuery } from "@tanstack/react-query";
 
 import { apiRequest } from "@app/config/request";
 
-import { TCertificateAuthority } from "./types";
+import { TCaEstConfig, TCertificateAuthority } from "./types";
 
 export const caKeys = {
   getCaById: (caId: string) => [{ caId }, "ca"],
   getCaCerts: (caId: string) => [{ caId }, "ca-cert"],
   getCaCert: (caId: string) => [{ caId }, "ca-cert"],
   getCaCsr: (caId: string) => [{ caId }, "ca-csr"],
-  getCaCrl: (caId: string) => [{ caId }, "ca-crl"]
+  getCaCrl: (caId: string) => [{ caId }, "ca-crl"],
+  getCaEstConfig: (caId: string) => [{ caId }, "ca-est-config"]
 };
 
 export const useGetCaById = (caId: string) => {
@@ -87,3 +88,19 @@ export const useGetCaCrl = (caId: string) => {
     enabled: Boolean(caId)
   });
 };
+
+export const useGetCaEstConfig = (caId: string) => {
+  return useQuery({
+    queryKey: caKeys.getCaEstConfig(caId),
+    queryFn: async () => {
+      const {
+        data: { caEstConfig }
+      } = await apiRequest.get<{
+        caEstConfig: TCaEstConfig;
+      }>(`/api/v1/pki/ca/${caId}/est-config`);
+
+      return caEstConfig;
+    },
+    enabled: Boolean(caId)
+  });
+};
diff --git a/frontend/src/hooks/api/ca/types.ts b/frontend/src/hooks/api/ca/types.ts
index bba7aa699..741eae2ef 100644
--- a/frontend/src/hooks/api/ca/types.ts
+++ b/frontend/src/hooks/api/ca/types.ts
@@ -1,5 +1,5 @@
 import { CertKeyAlgorithm } from "../certificates/enums";
-import { CaRenewalType,CaStatus, CaType } from "./enums";
+import { CaRenewalType, CaStatus, CaType } from "./enums";
 
 export type TCertificateAuthority = {
   id: string;
@@ -107,3 +107,23 @@ export type TRenewCaResponse = {
   certificateChain: string;
   serialNumber: string;
 };
+
+export type TCaEstConfig = {
+  caId: string;
+  caChain: string;
+  isEnabled: false;
+};
+
+export type TCreateCaEstConfigDTO = {
+  caId: string;
+  caChain: string;
+  passphrase: string;
+  isEnabled: boolean;
+};
+
+export type TUpdateCaEstConfigDTO = {
+  caId: string;
+  caChain?: string;
+  passphrase?: string;
+  isEnabled?: boolean;
+};
diff --git a/frontend/src/views/Project/CaPage/components/CaDetailsSection.tsx b/frontend/src/views/Project/CaPage/components/CaDetailsSection.tsx
index 5b0a2fb6a..eee00d017 100644
--- a/frontend/src/views/Project/CaPage/components/CaDetailsSection.tsx
+++ b/frontend/src/views/Project/CaPage/components/CaDetailsSection.tsx
@@ -125,7 +125,9 @@ export const CaDetailsSection = ({ caId, handlePopUpOpen }: Props) => {
                     colorSchema="secondary"
                     type="submit"
                     onClick={() => {
-                      handlePopUpOpen("enrollmentOptions");
+                      handlePopUpOpen("enrollmentOptions", {
+                        caId
+                      });
                     }}
                   >
                     Enrollment Options
diff --git a/frontend/src/views/Project/CaPage/components/CaEnrollmentModal.tsx b/frontend/src/views/Project/CaPage/components/CaEnrollmentModal.tsx
index 468a05f90..081557c24 100644
--- a/frontend/src/views/Project/CaPage/components/CaEnrollmentModal.tsx
+++ b/frontend/src/views/Project/CaPage/components/CaEnrollmentModal.tsx
@@ -1,3 +1,4 @@
+import { useEffect } from "react";
 import { Controller, useForm } from "react-hook-form";
 import { zodResolver } from "@hookform/resolvers/zod";
 import z from "zod";
@@ -14,6 +15,7 @@ import {
   Switch,
   TextArea
 } from "@app/components/v2";
+import { useCreateCaEstConfig, useGetCaEstConfig, useUpdateCaEstConfig } from "@app/hooks/api";
 import { UsePopUpState } from "@app/hooks/usePopUp";
 
 enum EnrollmentMethod {
@@ -28,32 +30,73 @@ type Props = {
   ) => void;
 };
 
-const schema = z
-  .object({
-    method: z.nativeEnum(EnrollmentMethod),
-    caChain: z.string(),
-    passphrase: z.string(),
-    isEnabled: z.boolean()
-  })
-  .required();
+const schema = z.object({
+  method: z.nativeEnum(EnrollmentMethod),
+  caChain: z.string(),
+  passphrase: z.string().optional(),
+  isEnabled: z.boolean()
+});
 
 export type FormData = z.infer<typeof schema>;
 
 export const CaEnrollmentModal = ({ popUp, handlePopUpToggle }: Props) => {
+  const popUpData = popUp?.enrollmentOptions?.data as {
+    caId: string;
+  };
+  const caId = popUpData?.caId;
+
+  const { data } = useGetCaEstConfig(caId);
+
   const {
     control,
     handleSubmit,
     reset,
+    setError,
     formState: { isSubmitting }
   } = useForm<FormData>({
-    resolver: zodResolver(schema),
-    defaultValues: {
-      isEnabled: false
-    }
+    resolver: zodResolver(schema)
   });
 
+  const { mutateAsync: createCaEstConfig } = useCreateCaEstConfig();
+  const { mutateAsync: updateCaEstConfig } = useUpdateCaEstConfig();
+
+  useEffect(() => {
+    if (data) {
+      reset({
+        caChain: data.caChain,
+        isEnabled: data.isEnabled
+      });
+    } else {
+      reset({
+        caChain: "",
+        isEnabled: false
+      });
+    }
+  }, [data]);
+
   const onFormSubmit = async ({ caChain, passphrase, isEnabled }: FormData) => {
     try {
+      if (data) {
+        await updateCaEstConfig({
+          caId,
+          caChain,
+          passphrase,
+          isEnabled
+        });
+      } else {
+        if (!passphrase) {
+          setError("passphrase", { message: "Passphrase is required to setup EST enrollment." });
+          return;
+        }
+
+        await createCaEstConfig({
+          caId,
+          caChain,
+          passphrase,
+          isEnabled
+        });
+      }
+
       handlePopUpToggle("enrollmentOptions", false);
 
       createNotification({
@@ -102,7 +145,6 @@ export const CaEnrollmentModal = ({ popUp, handlePopUpToggle }: Props) => {
           />
           <Controller
             control={control}
-            defaultValue=""
             name="caChain"
             render={({ field, fieldState: { error } }) => (
               <FormControl
@@ -117,15 +159,9 @@ export const CaEnrollmentModal = ({ popUp, handlePopUpToggle }: Props) => {
           />
           <Controller
             control={control}
-            defaultValue=""
             name="passphrase"
             render={({ field, fieldState: { error } }) => (
-              <FormControl
-                label="Passphrase"
-                isError={Boolean(error)}
-                errorText={error?.message}
-                isRequired
-              >
+              <FormControl label="Passphrase" isError={Boolean(error)} errorText={error?.message}>
                 <Input {...field} type="password" />
               </FormControl>
             )}