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gnutls: gnutls: Authentication Bypass via NUL Character in Username

🗓️ 29 Jun 2026 15:13:23Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 13 Views

A remote attacker can bypass authentication in GnuTLS by sending a username containing a null character on Rivest Shamir Adleman pre-shared key servers.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4i686gnutls3.6.14-10.el8_4.1gnutls-3.6.14-10.el8_4.1.i686.rpm
Red Hat Enterprise Linux8.4x86_64gnutls3.6.14-10.el8_4.1gnutls-3.6.14-10.el8_4.1.x86_64.rpm
Red Hat Enterprise Linux8.4i686gnutls-c++3.6.14-10.el8_4.1gnutls-c++-3.6.14-10.el8_4.1.i686.rpm
Red Hat Enterprise Linux8.4x86_64gnutls-c++3.6.14-10.el8_4.1gnutls-c++-3.6.14-10.el8_4.1.x86_64.rpm
Red Hat Enterprise Linux8.4i686gnutls-c++-debuginfo3.6.14-10.el8_4.1gnutls-c++-debuginfo-3.6.14-10.el8_4.1.i686.rpm
Red Hat Enterprise Linux8.4x86_64gnutls-c++-debuginfo3.6.14-10.el8_4.1gnutls-c++-debuginfo-3.6.14-10.el8_4.1.x86_64.rpm
Red Hat Enterprise Linux8.4i686gnutls-dane3.6.14-10.el8_4.1gnutls-dane-3.6.14-10.el8_4.1.i686.rpm
Red Hat Enterprise Linux8.4x86_64gnutls-dane3.6.14-10.el8_4.1gnutls-dane-3.6.14-10.el8_4.1.x86_64.rpm
Red Hat Enterprise Linux8.4i686gnutls-dane-debuginfo3.6.14-10.el8_4.1gnutls-dane-debuginfo-3.6.14-10.el8_4.1.i686.rpm
Red Hat Enterprise Linux8.4x86_64gnutls-dane-debuginfo3.6.14-10.el8_4.1gnutls-dane-debuginfo-3.6.14-10.el8_4.1.x86_64.rpm
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16 Jul 2026 11:46Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.1 - 9.8
EPSS0.0105
SSVC
13