OPENSUSE-SU-2026:11151-1 socat-1.8.1.3-1.1 on GA media

These are all security issues fixed in the socat-1.8.1.3-1.1 package on the GA media of openSUSE Tumbleweed...

Linux Distros Unpatched Vulnerability : CVE-2026-56123

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap...

DEBIAN-CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

ALPINE-CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

UBUNTU-CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123

CVE-2026-56123 affects socat versions 1.8.0.0 through 1.8.1.1. A signed-char sign-extension bug in the DOMAINNAME reply parser during SOCKS5 handshake allows a negative bytes_to_read value to be implicitly converted to size_t, causing an unbounded heap write into a 262-byte reply buffer. This res...

EUVD-2026-39455

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123 socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

CVE-2026-56123

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read...

OS Command Exec, Unix Command Shell, Bind TCP (via socat)

Execute an OS command from PHP. Creates an interactive shell via socat Module Options msf use payload/php/unix/cmd/bindsocattcp msf payloadbindsocattcp show actions ...actions... msf payloadbindsocattcp set ACTION msf payloadbindsocattcp show options ...show and set options... msf...

Unix Command Shell, Bind TCP (via socat)

Creates an interactive shell via socat Module Options msf use payload/cmd/unix/bindsocattcp msf payloadbindsocattcp show actions ...actions... msf payloadbindsocattcp set ACTION msf payloadbindsocattcp show options ...show and set options... msf payloadbindsocattcp run This module requires...

Amazon Linux 2 : socat, --advisory ALAS2-2026-3303 (ALAS-2026-3303)

The version of socat installed on the remote host is prior to 1.7.3.2-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3303 advisory. readline.sh in socat through 1.8.0.1 relies on the /tmp/$USER/stderr2 file. CVE-2024-54661 Tenable has extracted the preceding...

Low: socat

Issue Overview: readline.sh in socat through 1.8.0.1 relies on the /tmp/$USER/stderr2 file. CVE-2024-54661 Affected Packages: socat Note: This advisory is applicable to Amazon Linux 2 AL2 Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories. Issue...

Amazon Linux 2023 : socat (ALAS2023-2026-1701)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1701 advisory. readline.sh in socat through 1.8.0.1 relies on the /tmp/$USER/stderr2 file. CVE-2024-54661 Tenable has extracted the preceding description block directly from the tested product security advisory. Note...

Low: socat

Issue Overview: readline.sh in socat through 1.8.0.1 relies on the /tmp/$USER/stderr2 file. CVE-2024-54661 Affected Packages: socat Issue Correction: Run dnf update socat --releasever 2023.11.20260514 or dnf update --advisory ALAS2023-2026-1701 --releasever 2023.11.20260514 to update your system...

Tracing the Chain: Deep Learning for Stepping-Stone Intrusion Detection

Stepping-stone intrusions SSIs are a prevalent network evasion technique in which attackers route sessions through chains of compromised intermediate hosts to obscure their origin. Effective SSI detection requires correlating the incoming and outgoing flows at each relay host at extremely low fal...

MiracleLinux 7 : socat-1.7.3.2-2.el7 (AXBA:2017-1813:01)

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXBA:2017-1813:01 advisory. - The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service process freeze or crash...