diff --git a/include/mbedtls/rsa.h b/include/mbedtls/rsa.h
index df66524..be831f1 100644
--- a/include/mbedtls/rsa.h
+++ b/include/mbedtls/rsa.h
@@ -684,6 +684,10 @@
  *                 It is the generic wrapper for performing a PKCS#1 decryption
  *                 operation.
  *
+ * \warning        When \p ctx->padding is set to #MBEDTLS_RSA_PKCS_V15,
+ *                 mbedtls_rsa_rsaes_pkcs1_v15_decrypt() is called, which is an
+ *                 inherently dangerous function (CWE-242).
+ *
  * \note           The output buffer length \c output_max_len should be
  *                 as large as the size \p ctx->len of \p ctx->N (for example,
  *                 128 Bytes if RSA-1024 is used) to be able to hold an
@@ -720,6 +724,11 @@
  * \brief          This function performs a PKCS#1 v1.5 decryption
  *                 operation (RSAES-PKCS1-v1_5-DECRYPT).
  *
+ * \warning        This is an inherently dangerous function (CWE-242). Unless
+ *                 it is used in a side channel free and safe way (eg.
+ *                 implementing the TLS protocol as per 7.4.7.1 of RFC 5246),
+ *                 the calling code is vulnerable.
+ *
  * \note           The output buffer length \c output_max_len should be
  *                 as large as the size \p ctx->len of \p ctx->N, for example,
  *                 128 Bytes if RSA-1024 is used, to be able to hold an