GN
Product
Gnutls
by Gnu · last CVE May 18, 2026
74
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 8High 20Medium 9Low 1
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-42010
9.8
1%
May 7
Gnutls: gnutls: authentication bypass via nul character in username
Affected: All versions, or not specified
CVE-2021-20232
9.8
3%
Mar 12
A flaw was found in gnutls
Affected: 3.6.3 before 3.7.1
CVE-2021-20231
9.8
4%
Mar 12
A flaw was found in gnutls
Affected: 3.6.3 before 3.7.1
CVE-2017-5337
9.8
6%
Mar 24
Multiple heap-based buffer overflows in the read_attribute function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allow remote attackers to have unspecified impact via a crafted…
Affected: through 3.3.25; 3.5.0; 3.5.1; 3.5.2; 3.5.3; 3.5.4; +3 more
CVE-2017-5336
9.8
7%
Mar 24
Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified…
Affected: through 3.3.25; 3.5.0; 3.5.1; 3.5.2; 3.5.3; 3.5.4; +3 more
CVE-2017-5334
9.8
33%
Mar 24
Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via…
Affected: through 3.3.25; 3.5.0; 3.5.1; 3.5.2; 3.5.3; 3.5.4; +3 more
CVE-2009-3555
9.8
87%
Nov 9
The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and…
Affected: through 2.8.5
CVE-2026-33845
9.1
2%
Apr 30
Gnutls: gnutls: denial of service via dtls zero-length fragment
Affected: All versions, or not specified
CVE-2025-32990
8.2
1%
Jul 10
A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility
Affected: All versions, or not specified
CVE-2025-32988
8.2
1%
Jul 10
Gnutls: vulnerability in gnutls othername san export
Affected: before 3.8.10
CVE-2026-42009
7.5
1%
May 18
Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
Affected: All versions, or not specified
CVE-2026-1584
7.5
1%
Apr 9
Gnutls: gnutls: remote denial of service via crafted clienthello with invalid psk binder
Affected: All versions, or not specified
CVE-2024-0567
7.5
1%
Jan 16
Gnutls: rejects certificate chain with distributed trust
Affected: 3.7.0 before 3.8.3
CVE-2024-0553
7.5
2%
Jan 16
Gnutls: incomplete fix for cve-2023-5981
Affected: before 3.8.3
CVE-2022-2509
7.5
2%
Aug 1
A vulnerability found in gnutls
Affected: before 3.7.7
CVE-2020-24659
7.5
4%
Sep 4
An issue was discovered in GnuTLS before 3.6.15
Affected: before 3.6.15
CVE-2015-0294
7.5
2%
Jan 27
GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate
Affected: before 3.3.13
CVE-2019-3836
7.5
3%
Apr 1
It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain…
Affected: 3.6.3 before 3.6.7
CVE-2019-3829
7.5
59%
Mar 27
A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7
Affected: 3.5.8 before 3.6.7
CVE-2016-4456
7.5
2%
Aug 8
The "GNUTLS_KEYLOGFILE" environment variable in gnutls 3.4.12 allows remote attackers to overwrite and corrupt arbitrary files in the filesystem
Affected: 3.4.12
CVE-2017-7507
7.5
3%
Jun 16
GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid contents
Affected: through 3.5.12
CVE-2017-7869
7.5
3%
Apr 14
GnuTLS before 2017-02-20 has an out-of-bounds write caused by an integer overflow and heap-based buffer overflow related to the cdk_pkt_read function in opencdk/read-packet.c
Affected: through 3.5.9
CVE-2017-5335
7.5
8%
Mar 24
The stream reading functions in lib/opencdk/read-packet.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allow remote attackers to cause a denial of service (out-of-memory error…
Affected: through 3.3.25; 3.5.0; 3.5.1; 3.5.2; 3.5.3; 3.5.4; +3 more
CVE-2016-7444
7.5
2%
Sep 27
The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow…
Affected: through 3.4.14; 3.5.0; 3.5.1; 3.5.2; 3.5.3
CVE-2026-3833
7.4
1%
Apr 30
Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison
Affected: All versions, or not specified
CVE-2023-0361
7.4
1%
Feb 15
A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS
Affected: 3.6.8-11.el8_2
CVE-2020-13777
7.4
22%
Jun 4
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3)
Affected: 3.6.0 before 3.6.14
CVE-2020-11501
7.4
3%
Apr 3
GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS
Affected: 3.6.3 before 3.6.13
CVE-2021-4209
6.5
2%
Aug 24
A NULL pointer dereference flaw was found in GnuTLS
Affected: before 3.7.3
CVE-2023-5981
5.9
1%
Nov 28
Gnutls: timing side-channel in the rsa-psk authentication
Affected: before 3.8.2
CVE-2015-8313
5.9
2%
Dec 20
GnuTLS incorrectly validates the first byte of padding in CBC modes
Affected: 2.0.0 through 2.12.24
CVE-2018-10844
5.9
4%
Aug 22
It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack
Affected: before 3.6.12
CVE-2018-10845
5.9
4%
Aug 22
It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack
Affected: before 3.6.12
CVE-2008-4989
5.9
2%
Nov 13
The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary…
Affected: before 2.6.1
CVE-2018-16868
5.6
1%
Dec 3
A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data
Affected: through 3.6.4
CVE-2018-10846
5.6
0%
Aug 22
A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found
Affected: before 3.6.12
CVE-2025-32989
5.3
1%
Jul 10
Gnutls: vulnerability in gnutls sct extension parsing
Affected: All versions, or not specified
CVE-2026-3832
3.7
1%
Apr 30
Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response
Affected: All versions, or not specified
CVE-2015-3308
–
4%
Sep 2
Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a…
Affected: through 3.3.13
CVE-2015-6251
–
19%
Aug 24
Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a…
Affected: 3.3.0; 3.3.0; 3.3.1; 3.3.2; 3.3.3; 3.3.4; +16 more
CVE-2014-8155
–
1%
Aug 14
GnuTLS before 2.9.10 does not verify the activation and expiration dates of CA certificates, which allows man-in-the-middle attackers to spoof servers via a certificate issued by…
Affected: through 2.9.9
CVE-2015-0282
–
1%
Mar 24
GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade…
Affected: through 3.0.9
CVE-2014-8564
–
3%
Nov 13
The _gnutls_ecc_ansi_x963_export function in gnutls_ecc.c in GnuTLS 3.x before 3.1.28, 3.2.x before 3.2.20, and 3.3.x before 3.3.10 allows remote attackers to cause a denial of…
Affected: 3.0; 3.0.0; 3.0.1; 3.0.2; 3.0.3; 3.0.4; +34 more
CVE-2014-3465
–
4%
Jun 10
The gnutls_x509_dn_oid_name function in lib/x509/common.c in GnuTLS 3.0 before 3.1.20 and 3.2.x before 3.2.10 allows remote attackers to cause a denial of service (NULL pointer…
Affected: 3.0.0; 3.0.1; 3.0.2; 3.0.3; 3.0.4; 3.0.5; +34 more
CVE-2014-3469
–
4%
Jun 5
The (1) asn1_read_value_type and (2) asn1_read_value functions in GNU Libtasn1 before 3.6 allows context-dependent attackers to cause a denial of service (NULL pointer dereference…
Affected: before 3.5.7
CVE-2014-3468
–
4%
Jun 5
The asn1_get_bit_der function in GNU Libtasn1 before 3.6 does not properly report an error when a negative bit length is identified, which allows context-dependent attackers to…
Affected: before 3.5.7
CVE-2014-3467
–
7%
Jun 5
Multiple unspecified vulnerabilities in the DER decoder in GNU Libtasn1 before 3.6, as used in GnuTLS, allow remote attackers to cause a denial of service (out-of-bounds read) via…
Affected: before 3.5.7
CVE-2014-3466
–
11%
Jun 3
Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a…
Affected: 3.3.0; 3.3.0; 3.3.1; 3.3.2; 3.3.3; through 3.1.24; +34 more
CVE-2014-1959
–
3%
Mar 7
lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended…
Affected: through 3.1.20; 3.1.0; 3.1.1; 3.1.2; 3.1.3; 3.1.4; +27 more
CVE-2014-0092
–
30%
Mar 7
lib/x509/verify.c in GnuTLS before 3.1.22 and 3.2.x before 3.2.12 does not properly handle unspecified errors when verifying X.509 certificates from SSL servers, which allows…
Affected: through 3.2.11; 3.2.0; 3.2.1; 3.2.2; 3.2.3; 3.2.4; +29 more
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