CVE-2026-55200

🚨 CVE-2026-55200 - Vulnerabilidad Crítica de Escritura Fuera de Límites en libssh2 📌 Resumen CVE-2026-55200 es una vulnerabilidad crítica de corrupción de memoria que afecta a la ampliamente utilizada biblioteca libssh2. La falla surge de una validación incorrecta del campo de longitud del paquet...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : phpseclib vulnerabilities (USN-8830-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8830-1 advisory. It was discovered that phpseclib did not perform constant-time padding validation when using AES in CBC...

USN-8830-1: phpseclib vulnerabilities

It was discovered that phpseclib did not perform constant-time padding validation when using AES in CBC mode. A remote attacker could possibly use this issue to obtain sensitive information. CVE-2026-32935 It was discovered that phpseclib did not use a constant-time comparison when validating SSH...

CVE-2026-55200

An out-of-bounds write vulnerability exists in the libssh2 client. A remote attacker can exploit this by sending a specially crafted SSH packet with an abnormally large length value. This corrupts the application's memory and can potentially allow the attacker to execute arbitrary code on the...

CVE-2026-55200

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2transportread that fails to enforce upper bounds on packetlength field. Remote attackers can send crafted SSH packets with excessively large packetlength values to corrupt heap memory and achieve...

GHSA-WWX6-X28X-8259 russh: Post-decompression SSH packet size was not bounded, allowing remote oversized compressed packets

Summary When SSH compression is enabled, russh accepted compressed packets whose on-wire size passed the normal transport packet-length checks but whose decompressed size was much larger. This allowed a remote peer to send oversized post-decompression packets that should have been rejected. In...

CLSA-2026-1774369958 openssh: Fix of CVE-2026-3497

CVE-2026-3497: replace incorrect use of sshpktdisconnect with sshpacketdisconnect and properly initialize variables...

CLSA-2026-1774366569 Fix CVE(s): CVE-2026-3497

SECURITY UPDATE: pre-auth crash via GSSAPI key exchange - debian/patches/CVE-2026-3497.patch: replace sshpktdisconnect with sshpacketdisconnect and initialize gssbufferdesc variables in kexgssc.c, kexgsss.c. - CVE-2026-3497...

DEBIAN-CVE-2026-3497

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpktdisconnect on an error, which does not terminate the...

CVE-2026-3497

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpktdisconnect on an error, which does not terminate the...

CVE-2026-3497

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpktdisconnect on an error, which does not terminate the...

UBUNTU-CVE-2026-3497

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpktdisconnect on an error, which does not terminate the...

MiracleLinux 4 : libssh2-1.4.2-3.AXS4.1 (AXSA:2019-3922:01)

The remote MiracleLinux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2019-3922:01 advisory. libssh2: Integer overflow in transport read resulting in out of bounds write CVE-2019-3855 libssh2: Integer overflow in keyboard interactive handlin...

EUVD-2014-8409

Malware in sbrugna...

EUVD-2002-1529

Malware in sbrugna...

K000152843: Erlang/OTP vulnerabilities CVE-2025-26618, CVE-2025-30211, and CVE-2025-46712

Security Advisory Description CVE-2025-26618 Erlang is a programming language and runtime system for building massively scalable soft real-time systems with requirements on high availability. OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use...

CVE-2009-0623

Unspecified vulnerability in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers before A21.3 and Cisco ACE 4710 Application Control Engine Appliance before A32.1 allows remote attackers to cause a denial of service device reload via a crafted SSH packet...

CVE-2024-43410 Russh has an OOM Denial of Service due to allocation of untrusted amount

Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length. After parsing and potentially decrypting the 4-byte length,...

CVE-2024-43410 Russh has an OOM Denial of Service due to allocation of untrusted amount

Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length. After parsing and potentially decrypting the 4-byte length,...

CVE-2024-43410 Russh has an OOM Denial of Service due to allocation of untrusted amount

Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length. After parsing and potentially decrypting the 4-byte length,...