diff --git a/3rdparty/mbedtls/psvita_compat.c b/3rdparty/mbedtls/psvita_compat.c
new file mode 100644
index 00000000..ff9b5e87
--- /dev/null
+++ b/3rdparty/mbedtls/psvita_compat.c
@@ -0,0 +1,52 @@
+/*
+psvita_compat.c - mbedTLS platform overrides for PlayStation Vita
+Copyright (C) 2026 Xash3D FWGS contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+
+/* Upstream mbedTLS has no PSVita target, so:
+   - mbedtls_ms_time() forwards to the engine's Platform_DoubleTime
+   - mbedtls_platform_get_entropy() uses sceKernelGetRandomNumber
+   Wired in only when DEST_OS == 'psvita'. */
+
+#include <psp2/kernel/utils.h>
+
+#include "mbedtls/platform.h"
+#include "psa/crypto.h"
+
+extern double Platform_DoubleTime( void );
+
+mbedtls_ms_time_t mbedtls_ms_time( void )
+{
+	return (mbedtls_ms_time_t)( Platform_DoubleTime() * 1000.0 );
+}
+
+int mbedtls_platform_get_entropy( psa_driver_get_entropy_flags_t flags,
+	size_t *estimate_bits, unsigned char *output, size_t output_size )
+{
+	if( flags != 0 )
+		return PSA_ERROR_NOT_SUPPORTED;
+
+	size_t total = 0;
+	while( total < output_size )
+	{
+		size_t chunk = output_size - total;
+		if( chunk > 64 )
+			chunk = 64;
+		if( sceKernelGetRandomNumber( output + total, chunk ) != 0 )
+			return PSA_ERROR_INSUFFICIENT_ENTROPY;
+		total += chunk;
+	}
+
+	*estimate_bits = 8 * output_size;
+	return 0;
+}
diff --git a/3rdparty/mbedtls/wscript b/3rdparty/mbedtls/wscript
index 6851a1b0..656102a4 100644
--- a/3rdparty/mbedtls/wscript
+++ b/3rdparty/mbedtls/wscript
@@ -33,6 +33,9 @@ def build(bld):
 	if bld.env.DEST_OS == 'win32' and bld.env.DEST_SIZEOF_VOID_P == 4:
 		sources += ['winxp_entropy.c']
 
+	if bld.env.DEST_OS == 'psvita':
+		sources += ['psvita_compat.c']
+
 	defines = [
 		'MBEDTLS_USER_CONFIG_FILE="xash_mbedtls_config.h"',
 		'TF_PSA_CRYPTO_USER_CONFIG_FILE="xash_psa_config.h"',
diff --git a/3rdparty/mbedtls/xash_mbedtls_config.h b/3rdparty/mbedtls/xash_mbedtls_config.h
index 144084a6..bd048ca0 100644
--- a/3rdparty/mbedtls/xash_mbedtls_config.h
+++ b/3rdparty/mbedtls/xash_mbedtls_config.h
@@ -33,4 +33,9 @@
 #undef MBEDTLS_X509_CRL_PARSE_C
 #undef MBEDTLS_VERSION_FEATURES
 
+#if defined( __vita__ )
+/* Upstream has no PSVita support, psvita_compat.c fills in */
+#define MBEDTLS_PLATFORM_MS_TIME_ALT
+#endif
+
 #endif /* XASH_MBEDTLS_CONFIG_H */
diff --git a/3rdparty/mbedtls/xash_psa_config.h b/3rdparty/mbedtls/xash_psa_config.h
index 02d473d8..7ba9bf92 100644
--- a/3rdparty/mbedtls/xash_psa_config.h
+++ b/3rdparty/mbedtls/xash_psa_config.h
@@ -8,6 +8,12 @@
 #define MBEDTLS_PSA_DRIVER_GET_ENTROPY
 #endif
 
+#if defined( __vita__ )
+/* Upstream has no PSVita target, psvita_compat.c fills in the missing parts. */
+#undef MBEDTLS_PSA_BUILTIN_GET_ENTROPY
+#define MBEDTLS_PSA_DRIVER_GET_ENTROPY
+#endif
+
 #undef MBEDTLS_FS_IO
 #undef MBEDTLS_PSA_ITS_FILE_C
 #undef MBEDTLS_PSA_CRYPTO_STORAGE_C