diff --git a/libwvdrmengine/cdm/util/src/string_conversions.cpp b/libwvdrmengine/cdm/util/src/string_conversions.cpp
index 3faa2fe5..9e822102 100644
--- a/libwvdrmengine/cdm/util/src/string_conversions.cpp
+++ b/libwvdrmengine/cdm/util/src/string_conversions.cpp
@@ -208,7 +208,7 @@ std::string b2a_hex(const std::string& byte) {
 std::string HexEncode(const uint8_t* in_buffer, size_t size) {
   static const char kHexChars[] = "0123456789ABCDEF";
   if (size == 0) return "";
-  constexpr unsigned int kMaxSafeSize = 3072;
+  constexpr unsigned int kMaxSafeSize = 2048;
   if (size > kMaxSafeSize) size = kMaxSafeSize;
   // Each input byte creates two output hex characters.
   std::string out_buffer(size * 2, '\0');