diff --git a/Misc/NEWS b/Misc/NEWS
index 5f1929d0b1d..f9ccc0458a6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -16,6 +16,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #25939: On Windows open the cert store readonly in ssl.enum_certificates.
+
 - Issue #22570: Add 'path' attribute to pathlib.Path objects,
   returning the same as str(), to make it more similar to DirEntry.
   Library code can now write getattr(p, 'path', p) to get the path as
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index d918671fc82..02971a75153 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -3597,7 +3597,9 @@ PySSL_enum_certificates(PyObject *self, PyObject *args, PyObject *kwds)
     if (result == NULL) {
         return NULL;
     }
-    hStore = CertOpenSystemStore((HCRYPTPROV)NULL, store_name);
+    hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, (HCRYPTPROV)NULL,
+                            CERT_STORE_READONLY_FLAG | CERT_SYSTEM_STORE_LOCAL_MACHINE,
+                            store_name);
     if (hStore == NULL) {
         Py_DECREF(result);
         return PyErr_SetFromWindowsErr(GetLastError());
@@ -3685,7 +3687,9 @@ PySSL_enum_crls(PyObject *self, PyObject *args, PyObject *kwds)
     if (result == NULL) {
         return NULL;
     }
-    hStore = CertOpenSystemStore((HCRYPTPROV)NULL, store_name);
+    hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, (HCRYPTPROV)NULL,
+                            CERT_STORE_READONLY_FLAG | CERT_SYSTEM_STORE_LOCAL_MACHINE,
+                            store_name);
     if (hStore == NULL) {
         Py_DECREF(result);
         return PyErr_SetFromWindowsErr(GetLastError());