CVE-2026-55957 Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind

Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1...

EulerOS 2.0 SP15 : openssh (EulerOS-SA-2026-2455)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.CVE-2026-35388 OpenSSH before 10.3 mishandles...

EulerOS 2.0 SP15 : openssh (EulerOS-SA-2026-2496)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.CVE-2026-35388 OpenSSH before 10.3 mishandles...

Astra Linux – Vulnerability in libssh

A flaw was discovered in libssh. The API function sshgethexa is vulnerable to a denial-of-service attack when processing zero-length inputs. This vulnerability can be exploited remotely by an attacker during GSSAPI Generic Security Service Application Program Interface authentication, if the...

OESA-2026-2691 mongo-c-driver security update

mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents. Security Fixes: The MongoDB C Driver's Cyrus SASL integration performs unsafe...

CVE-2026-55654

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI Generic Security Service Application Programming Interface indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific...

EUVD-2026-38414

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI Generic Security Service Application Programming Interface indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific...

CVE-2026-55654

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI Generic Security Service Application Programming Interface indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific...

SUSE CVE-2026-2303

The mongo-go-driver repository contains CGo bindings for GSSAPI Kerberos authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not...

Siemens RuggedCom Rox Use of Weak Hash (CVE-2025-3576)

A vulnerability in the MIT Kerberos implementation allows GSSAPI- protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This m...

Fedora 43 : bind9-next (2026-ec095a4675)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-ec095a4675 advisory. Update to 9.21.22 rhbz2480122 Security Fixes: - Limit resolver server list size. CVE-2026-3592 - Fix GSS-API resource leak. CVE-2026-3039 - Disable...

RockyLinux 8 : bind (RLSA-2026:24339)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:24339 advisory. bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation CVE-2026-3039 bind: BIND: Denial of Service via specially crafted DNS messages...

EulerOS 2.0 SP13 : openssh (EulerOS-SA-2026-2305)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : OpenSSH before 10.3 mishandles the authorizedkeys principals option in uncommon scenarios involving a principals list in conjunction with a...

EulerOS 2.0 SP13 : openssh (EulerOS-SA-2026-2348)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : OpenSSH before 10.3 mishandles the authorizedkeys principals option in uncommon scenarios involving a principals list in conjunction with a...

EulerOS 2.0 SP11 : libssh (EulerOS-SA-2026-2214)

According to the versions of the libssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : The API function sshgethexa is vulnerable, when 0-lenght input is provided to this function. This function is used internally in...

EulerOS 2.0 SP11 : libssh (EulerOS-SA-2026-2252)

According to the versions of the libssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : The API function sshgethexa is vulnerable, when 0-lenght input is provided to this function. This function is used internally in...

Oracle Linux 8 : bind (ELSA-2026-24339)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-24339 advisory. - Fix GSS-API resource leak CVE-2026-3039 Tenable has extracted the preceding description block directly from the Oracle Linux security advisory. Note...

EulerOS Virtualization 2.10.1 : libssh (EulerOS-SA-2026-2027)

According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A malicious SCP server can send unexpected paths that could make the client application override local files outside of working...

SUSE-SU-2026:22067-1 Security update for openssh

This update for openssh fixes the following issues: - CVE-2026-35388: Added missing askpass check for proxy-mode multiplexing sessions bsc1261441 - CVE-2026-3497: Fixed a possible information disclosure or denial of service due to uninitialized variables in gssapi patches bsc1259642 - Add patch t...

[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...