diff --git a/components/esp_tee/project_include.cmake b/components/esp_tee/project_include.cmake
index 46fd4fbfe8c..d08b07ee346 100644
--- a/components/esp_tee/project_include.cmake
+++ b/components/esp_tee/project_include.cmake
@@ -8,7 +8,15 @@ idf_build_get_property(project_dir PROJECT_DIR)
 idf_build_get_property(non_os_build NON_OS_BUILD)
 idf_build_get_property(custom_secure_service_dir CUSTOM_SECURE_SERVICE_COMPONENT_DIR)
 idf_build_get_property(custom_secure_service_component CUSTOM_SECURE_SERVICE_COMPONENT)
-idf_build_get_property(partition_table_bin PARTITION_TABLE_BIN_PATH)
+
+if(IDF_BUILD_V2)
+    # Under build system v2, partition_table/project_include.cmake may run
+    # after this file, so PARTITION_TABLE_BIN_PATH is not yet set. Defer the
+    # read to CMake's generate phase via a generator expression.
+    idf_build_get_property(partition_table_bin PARTITION_TABLE_BIN_PATH GENERATOR_EXPRESSION)
+else()
+    idf_build_get_property(partition_table_bin PARTITION_TABLE_BIN_PATH)
+endif()
 
 if(NOT CONFIG_SECURE_ENABLE_TEE OR non_os_build)
     return()
diff --git a/components/esp_tee/subproject/CMakeLists.txt b/components/esp_tee/subproject/CMakeLists.txt
index 8121e814578..0635a5a37b8 100644
--- a/components/esp_tee/subproject/CMakeLists.txt
+++ b/components/esp_tee/subproject/CMakeLists.txt
@@ -33,6 +33,12 @@ list(APPEND COMPONENTS attestation tee_flash_mgr tee_ota_ops tee_sec_storage)
 
 include_directories("${SECURE_SERVICE_HEADERS_DIR}")
 
+# The TEE subproject is not yet ported to build system v2.
+# Explicitly clear the IDF_BUILD_V2 environment variable so that
+# tools/cmake/project.cmake does not activate the cmakev2 shim when
+# the parent build was invoked with IDF_BUILD_V2=1.
+unset(ENV{IDF_BUILD_V2})
+
 include("${IDF_PATH}/tools/cmake/project.cmake")
 set(common_req esp_common esp_hw_support esp_rom freertos hal log esp_libc soc spi_flash)