krb5: MIT Kerberos 5 (krb5): Denial of Service via integer underflow and out-of-bounds read

A flaw was found in MIT Kerberos 5 krb5. An unauthenticated remote attacker can exploit an integer underflow and an out-of-bounds read vulnerability by calling gssacceptseccontext on a system with a NegoEx mechanism registered. This can lead to the process terminating, resulting in a Denial of...

RockyLinux 9 : krb5 (RLSA-2026:19357)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:19357 advisory. krb5: MIT Kerberos 5 krb5: Denial of Service via integer underflow and out-of-bounds read CVE-2026-40356 krb5: MIT Kerberos 5: Denial of Service via NUL...

RLSA-2026:19145 Important: krb5 security update

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the...

Debian dla-4603 : krb5-admin-server - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4603 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4603-1 [email protected]...

RockyLinux 10 : krb5 (RLSA-2026:19145)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:19145 advisory. krb5: MIT Kerberos 5 krb5: Denial of Service via integer underflow and out-of-bounds read CVE-2026-40356 krb5: MIT Kerberos 5: Denial of Service via NU...

RLSA-2026:19357 Important: krb5 security update

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the...

[SECURITY] [DLA 4603-1] krb5 security update

Debian LTS Advisory DLA-4603-1 [email protected] https://www.debian.org/lts/security/ Emmanuel Arias May 28, 2026 https://wiki.debian.org/LTS Package : krb5 Version : 1.18.3-6+deb11u8 CVE ID : CVE-2026-40355 CVE-2026-40356 Debian Bug : 1135317 Two vulnerabilities was found in krb5, the...

TencentOS Server 3: krb5 (TSSA-2026:0386)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0386 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

Debian dsa-6293 : krb5-admin-server - security update

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6293 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6293-1 [email protected] https://www.debian.org/security/...

[SECURITY] [DSA 6293-1] krb5 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6293-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso May 22, 2026 https://www.debian.org/security/faq -...

krb5: MIT Kerberos 5 (krb5): Denial of Service via integer underflow and out-of-bounds read

A flaw was found in MIT Kerberos 5 krb5. An unauthenticated remote attacker can exploit an integer underflow and an out-of-bounds read vulnerability by calling gssacceptseccontext on a system with a NegoEx mechanism registered. This can lead to the process terminating, resulting in a Denial of...

Important: Red Hat Security Advisory: krb5 security update

An update for krb5 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

krb5: MIT Kerberos 5: Denial of Service via NULL pointer dereference in NegoEx mechanism

A flaw was found in MIT Kerberos 5 krb5. An unauthenticated remote attacker can exploit a NULL pointer dereference vulnerability by calling gssacceptseccontext on a system with a NegoEx mechanism registered. This can lead to the termination of the process, resulting in a Denial of Service DoS...

ALSA-2026:19145 Important: krb5 security update

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the...

Important: krb5 security update

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the...

ALSA-2026:19357 Important: krb5 security update

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the...

krb5 security update

An update is available for krb5. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Kerberos is a network authentication system, which can improve the security of...

Oracle Linux 8 : krb5 (ELSA-2026-16799)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-16799 advisory. 1.18.2-34.0.1 - Fixed race condition in krb5setpassword Orabug: 33609767 1.18.2-34 - Fix NegoEx parsing vulnerabilities CVE-2026-40355, CVE-2026-40356...

MiracleLinux 8 : krb5-1.18.2-34.el8_10 (AXSA:2026-613:03)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-613:03 advisory. krb5: MIT Kerberos 5 krb5: Denial of Service via integer underflow and out-of-bounds read CVE-2026-40356 krb5: MIT Kerberos 5: Denial of Service via...

Fedora 42 : krb5 (2026-6c99aaa6d3)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6c99aaa6d3 advisory. - Fix NegoEx parsing vulnerabilities CVE-2026-40355, CVE-2026-40356 Tenable has extracted the preceding description block directly from the Fedora...