diff --git a/CHANGES b/CHANGES
index 9896e53cd..c815457e2 100644
--- a/CHANGES
+++ b/CHANGES
@@ -7,6 +7,8 @@
 
  Changes between 8.3.3 and 8.3.4 [xxxx年xx月xx日]
 
+  *) 修复CVE-2024-0727
+
   *) 修复CVE-2023-4807
 
   *) 修复CVE-2023-5678
diff --git a/CHANGES.en b/CHANGES.en
index 09e126522..b1e869e71 100644
--- a/CHANGES.en
+++ b/CHANGES.en
@@ -5,9 +5,43 @@
  This is a high-level summary of the most important changes.
  For a full list of changes, see the git commit log.
 
- Changes between 8.3.2 and 8.3.3 [xx XXX xxxx]
+ Changes between 8.3.3 and 8.3.4 [xx XXX xxxx]
 
-  *)
+  *) Fix CVE-2024-0727
+
+  *) Fix CVE-2023-4807
+
+  *) Fix CVE-2023-5678
+
+  *) Fix the compilation problem of SM4NI
+
+ Changes between 8.3.2 and 8.3.3 [28 Aug 2023]
+
+  *) Fix CVE-2023-3446
+
+  *) Fix CVE-2023-3817
+
+  *) Support for OpenHarmony OS version 3.2
+
+  *) Fix CVE-2022-2097
+
+  *) Fix unknown option --prefix on CFLAGS [daipingh]
+
+  *) Fix not checking OPENSSL_memdup return value issue
+
+  *) Change SSL_connection_is_ntls to use preread mode to determine whether it's NTLS
+
+  *) Fix CVE-2022-4304
+
+  *) Fix CVE-2023-0286
+
+  *) Fix CVE-2022-4450
+
+  *) Fix CVE-2023-0215
+
+  *) Support SM4-NI optimization
+
+  *) Fix CVE-2023-2650
 
  Changes between 8.3.1 and 8.3.2 [12 Dec 2022]
 
diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt
index d5b749165..bdf636b2c 100644
--- a/crypto/err/openssl.txt
+++ b/crypto/err/openssl.txt
@@ -1011,6 +1011,7 @@ PKCS12_F_PKCS12_SETUP_MAC:122:PKCS12_setup_mac
 PKCS12_F_PKCS12_SET_MAC:123:PKCS12_set_mac
 PKCS12_F_PKCS12_UNPACK_AUTHSAFES:130:PKCS12_unpack_authsafes
 PKCS12_F_PKCS12_UNPACK_P7DATA:131:PKCS12_unpack_p7data
+PKCS12_F_PKCS12_UNPACK_P7ENCDATA:134:PKCS12_unpack_p7encdata
 PKCS12_F_PKCS12_VERIFY_MAC:126:PKCS12_verify_mac
 PKCS12_F_PKCS8_ENCRYPT:125:PKCS8_encrypt
 PKCS12_F_PKCS8_SET0_PBE:132:PKCS8_set0_pbe
diff --git a/crypto/pkcs12/p12_add.c b/crypto/pkcs12/p12_add.c
index af184c86a..654969188 100644
--- a/crypto/pkcs12/p12_add.c
+++ b/crypto/pkcs12/p12_add.c
@@ -76,6 +76,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7data(PKCS7 *p7)
                   PKCS12_R_CONTENT_TYPE_NOT_DATA);
         return NULL;
     }
+
+    if (p7->d.data == NULL) {
+        PKCS12err(PKCS12_F_PKCS12_UNPACK_P7DATA, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS));
 }
 
@@ -132,6 +138,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass,
 {
     if (!PKCS7_type_is_encrypted(p7))
         return NULL;
+
+    if (p7->d.encrypted == NULL) {
+        PKCS12err(PKCS12_F_PKCS12_UNPACK_P7ENCDATA, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     return PKCS12_item_decrypt_d2i(p7->d.encrypted->enc_data->algorithm,
                                    ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
                                    pass, passlen,
@@ -159,6 +171,12 @@ STACK_OF(PKCS7) *PKCS12_unpack_authsafes(const PKCS12 *p12)
                   PKCS12_R_CONTENT_TYPE_NOT_DATA);
         return NULL;
     }
+
+    if (p12->authsafes->d.data == NULL) {
+        PKCS12err(PKCS12_F_PKCS12_UNPACK_AUTHSAFES, PKCS12_R_DECODE_ERROR);
+        return NULL;
+    }
+
     return ASN1_item_unpack(p12->authsafes->d.data,
                             ASN1_ITEM_rptr(PKCS12_AUTHSAFES));
 }
diff --git a/crypto/pkcs12/p12_mutl.c b/crypto/pkcs12/p12_mutl.c
index 3658003fe..766c9c1e9 100644
--- a/crypto/pkcs12/p12_mutl.c
+++ b/crypto/pkcs12/p12_mutl.c
@@ -93,6 +93,11 @@ static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
         return 0;
     }
 
+    if (p12->authsafes->d.data == NULL) {
+        PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_DECODE_ERROR);
+        return 0;
+    }
+
     salt = p12->mac->salt->data;
     saltlen = p12->mac->salt->length;
     if (!p12->mac->iter)
diff --git a/crypto/pkcs12/p12_npas.c b/crypto/pkcs12/p12_npas.c
index 0334289a8..130337638 100644
--- a/crypto/pkcs12/p12_npas.c
+++ b/crypto/pkcs12/p12_npas.c
@@ -78,8 +78,9 @@ static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass)
             bags = PKCS12_unpack_p7data(p7);
         } else if (bagnid == NID_pkcs7_encrypted) {
             bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
-            if (!alg_get(p7->d.encrypted->enc_data->algorithm,
-                         &pbe_nid, &pbe_iter, &pbe_saltlen))
+            if (p7->d.encrypted == NULL
+                    || !alg_get(p7->d.encrypted->enc_data->algorithm,
+                                &pbe_nid, &pbe_iter, &pbe_saltlen))
                 goto err;
         } else {
             continue;
diff --git a/crypto/pkcs12/pk12err.c b/crypto/pkcs12/pk12err.c
index 638f794a3..224941d74 100644
--- a/crypto/pkcs12/pk12err.c
+++ b/crypto/pkcs12/pk12err.c
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -58,6 +58,8 @@ static const ERR_STRING_DATA PKCS12_str_functs[] = {
      "PKCS12_unpack_authsafes"},
     {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_UNPACK_P7DATA, 0),
      "PKCS12_unpack_p7data"},
+    {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_UNPACK_P7ENCDATA, 0),
+     "PKCS12_unpack_p7encdata"},
     {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_VERIFY_MAC, 0),
      "PKCS12_verify_mac"},
     {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS8_ENCRYPT, 0), "PKCS8_encrypt"},
diff --git a/crypto/pkcs7/pk7_mime.c b/crypto/pkcs7/pk7_mime.c
index 19e686814..b457108c9 100644
--- a/crypto/pkcs7/pk7_mime.c
+++ b/crypto/pkcs7/pk7_mime.c
@@ -30,10 +30,14 @@ int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
 {
     STACK_OF(X509_ALGOR) *mdalgs;
     int ctype_nid = OBJ_obj2nid(p7->type);
-    if (ctype_nid == NID_pkcs7_signed)
+
+    if (ctype_nid == NID_pkcs7_signed) {
+        if (p7->d.sign == NULL)
+            return 0;
         mdalgs = p7->d.sign->md_algs;
-    else
+    } else {
         mdalgs = NULL;
+    }
 
     flags ^= SMIME_OLDMIME;
 
diff --git a/include/openssl/pkcs12err.h b/include/openssl/pkcs12err.h
index 796c0ab03..8c09152e1 100644
--- a/include/openssl/pkcs12err.h
+++ b/include/openssl/pkcs12err.h
@@ -1,6 +1,6 @@
 /*
  * Generated by util/mkerr.pl DO NOT EDIT
- * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -47,6 +47,7 @@ int ERR_load_PKCS12_strings(void);
 # define PKCS12_F_PKCS12_SET_MAC                          123
 # define PKCS12_F_PKCS12_UNPACK_AUTHSAFES                 130
 # define PKCS12_F_PKCS12_UNPACK_P7DATA                    131
+# define PKCS12_F_PKCS12_UNPACK_P7ENCDATA                 134
 # define PKCS12_F_PKCS12_VERIFY_MAC                       126
 # define PKCS12_F_PKCS8_ENCRYPT                           125
 # define PKCS12_F_PKCS8_SET0_PBE                          132
diff --git a/test/recipes/80-test_pkcs12.t b/test/recipes/80-test_pkcs12.t
index 430df6708..387fd25ab 100644
--- a/test/recipes/80-test_pkcs12.t
+++ b/test/recipes/80-test_pkcs12.t
@@ -9,7 +9,7 @@
 use strict;
 use warnings;
 
-use OpenSSL::Test qw/:DEFAULT srctop_file/;
+use OpenSSL::Test qw/:DEFAULT srctop_file with/;
 use OpenSSL::Test::Utils;
 
 use Encode;
@@ -57,7 +57,7 @@ if (eval { require Win32::API; 1; }) {
 }
 $ENV{OPENSSL_WIN32_UTF8}=1;
 
-plan tests => 1;
+plan tests => 5;
 
 # just see that we can read shibboleth.pfx protected with $pass
 ok(run(app(["openssl", "pkcs12", "-noout",
@@ -65,4 +65,25 @@ ok(run(app(["openssl", "pkcs12", "-noout",
             "-in", srctop_file("test", "shibboleth.pfx")])),
    "test_pkcs12");
 
+# Test some bad pkcs12 files
+my $bad1 = srctop_file("test", "recipes", "80-test_pkcs12_data", "bad1.p12");
+my $bad2 = srctop_file("test", "recipes", "80-test_pkcs12_data", "bad2.p12");
+my $bad3 = srctop_file("test", "recipes", "80-test_pkcs12_data", "bad3.p12");
+
+with({ exit_checker => sub { return shift == 1; } },
+     sub {
+        ok(run(app(["openssl", "pkcs12", "-in", $bad1, "-password", "pass:"])),
+           "test bad pkcs12 file 1");
+
+        ok(run(app(["openssl", "pkcs12", "-in", $bad1, "-password", "pass:",
+                    "-nomacver"])),
+           "test bad pkcs12 file 1 (nomacver)");
+
+        ok(run(app(["openssl", "pkcs12", "-in", $bad2, "-password", "pass:"])),
+           "test bad pkcs12 file 2");
+
+        ok(run(app(["openssl", "pkcs12", "-in", $bad3, "-password", "pass:"])),
+           "test bad pkcs12 file 3");
+     });
+
 SetConsoleOutputCP($savedcp) if (defined($savedcp));
diff --git a/test/recipes/80-test_pkcs12_data/bad1.p12 b/test/recipes/80-test_pkcs12_data/bad1.p12
new file mode 100644
index 000000000..8f3387c7e
Binary files /dev/null and b/test/recipes/80-test_pkcs12_data/bad1.p12 differ
diff --git a/test/recipes/80-test_pkcs12_data/bad2.p12 b/test/recipes/80-test_pkcs12_data/bad2.p12
new file mode 100644
index 000000000..113cb6f1c
Binary files /dev/null and b/test/recipes/80-test_pkcs12_data/bad2.p12 differ
diff --git a/test/recipes/80-test_pkcs12_data/bad3.p12 b/test/recipes/80-test_pkcs12_data/bad3.p12
new file mode 100644
index 000000000..ef86a1d86
Binary files /dev/null and b/test/recipes/80-test_pkcs12_data/bad3.p12 differ