diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 1b122ee..80bdd25 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -1384,6 +1384,38 @@
 	echo 'a1' | xxd -r -p | dd of=$@ bs=1 seek=810 conv=notrunc
 all_final += pkcs7_signerInfo_2_invalid_tag.der
 
+# pkcs7 signature file with corrupted signer info[1]
+pkcs7_data_signed_badsigner1_badsize.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo '72' | xxd -p -r | dd of=$@ bs=1 seek=438 conv=notrunc
+all_final += pkcs7_data_signed_badsigner1_badsize.der
+
+pkcs7_data_signed_badsigner1_badtag.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo 'a1' | xxd -p -r | dd of=$@ bs=1 seek=442 conv=notrunc
+all_final += pkcs7_data_signed_badsigner1_badtag.der
+
+pkcs7_data_signed_badsigner1_fuzzbad.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo 'a1' | xxd -p -r | dd of=$@ bs=1 seek=550 conv=notrunc
+all_final += pkcs7_data_signed_badsigner1_fuzzbad.der
+
+# pkcs7 signature file with corrupted signer info[2]
+pkcs7_data_signed_badsigner2_badsize.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo '72'| xxd -p -r | dd of=$@ bs=1 seek=813 conv=notrunc
+all_final += pkcs7_data_signed_badsigner2_badsize
+
+pkcs7_data_signed_badsigner2_badtag.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo 'a1'| xxd -p -r | dd of=$@ bs=1 seek=817 conv=notrunc
+all_final += pkcs7_data_signed_badsigner2_badtag
+
+pkcs7_data_signed_badsigner2_fuzzbad.der: pkcs7_data_3_signed.der
+	cp pkcs7_data_3_signed.der $@
+	echo 'a1'| xxd -p -r | dd of=$@ bs=1 seek=925 conv=notrunc
+all_final += pkcs7_data_signed_badsigner2_fuzzbad
+
 # pkcs7 file with version 2
 pkcs7_data_cert_signed_v2.der: pkcs7_data_cert_signed_sha256.der
 	cp pkcs7_data_cert_signed_sha256.der $@
diff --git a/tests/data_files/pkcs7_data_signed_badsigner1_badsize.der b/tests/data_files/pkcs7_data_signed_badsigner1_badsize.der
new file mode 100644
index 0000000..da7f3a9
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner1_badsize.der
Binary files differ
diff --git a/tests/data_files/pkcs7_data_signed_badsigner1_badtag.der b/tests/data_files/pkcs7_data_signed_badsigner1_badtag.der
new file mode 100644
index 0000000..402b910
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner1_badtag.der
Binary files differ
diff --git a/tests/data_files/pkcs7_data_signed_badsigner1_fuzzbad.der b/tests/data_files/pkcs7_data_signed_badsigner1_fuzzbad.der
new file mode 100644
index 0000000..e19c54a
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner1_fuzzbad.der
Binary files differ
diff --git a/tests/data_files/pkcs7_data_signed_badsigner2_badsize.der b/tests/data_files/pkcs7_data_signed_badsigner2_badsize.der
new file mode 100644
index 0000000..6b12b80
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner2_badsize.der
Binary files differ
diff --git a/tests/data_files/pkcs7_data_signed_badsigner2_badtag.der b/tests/data_files/pkcs7_data_signed_badsigner2_badtag.der
new file mode 100644
index 0000000..7929444
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner2_badtag.der
Binary files differ
diff --git a/tests/data_files/pkcs7_data_signed_badsigner2_fuzzbad.der b/tests/data_files/pkcs7_data_signed_badsigner2_fuzzbad.der
new file mode 100644
index 0000000..b52bb78
--- /dev/null
+++ b/tests/data_files/pkcs7_data_signed_badsigner2_fuzzbad.der
Binary files differ
diff --git a/tests/suites/test_suite_pkcs7.data b/tests/suites/test_suite_pkcs7.data
index da8146b..ffeec49 100644
--- a/tests/suites/test_suite_pkcs7.data
+++ b/tests/suites/test_suite_pkcs7.data
@@ -30,6 +30,30 @@
 depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
 pkcs7_parse:"data_files/pkcs7_data_signed_badsigner.der":MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO,MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)
 
+PKCS7 Signed Data Parse Fail with corrupted signer info[1] invalid size #6.1
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner1_badsize.der":MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO
+
+PKCS7 Signed Data Parse Fail with corrupted signer info[2] invalid size #6.2
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner2_badsize.der":MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO
+
+PKCS7 Signed Data Parse Fail with corrupted signer info[1] unexpected tag #6.3
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner1_badtag.der":MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO,MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)
+
+PKCS7 Signed Data Parse Fail with corrupted signer info[2] unexpected tag #6.4
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner2_badtag.der":MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO,MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)
+
+PKCS7 Signed Data Parse Fail with corrupted signer info[1] fuzz bad #6.5
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner1_fuzzbad.der":MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO
+
+PKCS7 Signed Data Parse Fail with corrupted signer info[2] fuzz bad #6.6
+depends_on:MBEDTLS_SHA256_C:MBEDTLS_RSA_C
+pkcs7_parse:"data_files/pkcs7_data_signed_badsigner2_fuzzbad.der":MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO
+
 PKCS7 Signed Data Parse Fail Version other than 1 #7
 depends_on:MBEDTLS_SHA256_C
 pkcs7_parse:"data_files/pkcs7_data_cert_signed_v2.der":MBEDTLS_ERR_PKCS7_INVALID_VERSION