CVE-2026-73242 FreeRDP: Kerberos GSS Wrap-token `EC` field is unbounded, causing an out-of-bounds decrypt in `kerberos_DecryptMessage`

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP's winpr/libwinpr/sspi/Kerberos/kerberos.c kerberosDecryptMessage function fails to bound the peer-controlled GSS Wrap-token EC field before using it with RRC in IOV pointer offsets, allowing a malicious RDP...

EUVD-2026-56135

FreeRDP before 3.30.0 contains an out-of-bounds vulnerability in kerberosDecryptMessage winpr/libwinpr/sspi/Kerberos/kerberos.c. The 16-bit EC extra count field of a peer-supplied GSS Wrap token RFC 4121 is used directly in pointer arithmetic to locate the encrypted regions without being...

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A proof of concept exploit for an authentication bypass vulnerability in libssh version 0.12.0. The vulnerability affects servers using GSSAPI key exchange and allows a client possessing a valid Kerberos ticket for any principal in the realm to authenticate as an arbitrary local user. The server...

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...

RHEL 9 : postgresql (RHSA-2026:52395)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:52395 advisory. PostgreSQL is an advanced object-relational database management system DBMS. Security Fixes: postgresql: PostgreSQL: Denial of Service via...

openSUSE 16: openssh / openssh-askpass-gnome / openssh-cavs / openssh-clients / etc (openSUSE-SU-2026:21477-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21477-1 advisory. - CVE-2026-59995: sftp: location of downloaded files not properly constrained when sftp server:/path . is used with an attacker-controlled serve...

AlmaLinux 10 : openssh (ALSA-2026:47757)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:47757 advisory. openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenSSH client versions CVE-2026-55655 openssh: Double free in...

openssh security update

9.9p1-25.0.1 - Upstream references found with /usr/bin/ssh Orabug: 37824421 9.9p1-25 - CVE-2026-59996: Fix remote glob result of '..' causing files to be placed in unintended parent directories when scp performs remote-to-remote copy via the local host Resolves: RHEL-193170 - CVE-2026-60002: Fix...

Oracle Linux 10 : openssh (ELSA-2026-47757)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-47757 advisory. - CVE-2026-59996: Fix remote glob result of '..' causing files to be placed in unintended parent directories when scp performs remote-to-remote copy...

Linux Distros Unpatched Vulnerability : CVE-2026-59851

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is...

Linux Distros Unpatched Vulnerability : CVE-2026-59842

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without...

openssh: Fix of CVE-2026-60000

CVE-2026-60000: fix GSSAPI pre-authentication denial of service where inputgssapierrtok did not finish the postponed authentication attempt, so failed GSSAPI requests were never counted against MaxAuthTries...

CVE-2026-59851

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users...

UBUNTU-CVE-2026-59851

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the gssapi-keyex process due to missing verification of the Kerberos principal's authorization for the requested local user. An attacker can gain unauthorized access as arbitrary users by exploiting this flaw...

CVE-2026-59842

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small...

CVE-2026-59842

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small...

CVE-2026-59842 Libssh: libssh: information disclosure via short gssapi curve25519 public key

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small...

EUVD-2026-46176

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small...

Oracle Linux 10 : openssh (ELSA-2026-19069)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-19069 advisory. - CVE-2026-35385: Fix privilege escalation via scp legacy protocol when not in preserving file mode Resolves: RHEL-164739 - CVE-2026-35388: Add...