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    4 vulnerabilities by socat

    CVE-2026-56123 (GCVE-0-2026-56123)

    Vulnerability from nvd – Published: 2026-06-25 15:43 – Updated: 2026-06-26 02:03 X_Open Source
    VLAI
    Title
    socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser
    Summary
    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 through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    Assigner
    References
    Impacted products
    Vendor Product Version
    socat socat Affected: 1.8.0.0 , < 1.8.1.2 (custom)
    Create a notification for this product.
    Date Public
    2026-06-25 00:00
    Credits
    Tristan Madani (@TristanInSec)
    Show details on NVD website

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    CVE-2004-1484 (GCVE-0-2004-1484)

    Vulnerability from nvd – Published: 2005-02-13 05:00 – Updated: 2024-08-08 00:53
    VLAI
    Summary
    Format string vulnerability in the _msg function in error.c in socat 1.4.0.3 and earlier, when used as an HTTP proxy client and run with the -ly option, allows remote attackers or local users to execute arbitrary code via format string specifiers in a syslog message.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    Date Public
    2004-10-25 00:00
    Show details on NVD website

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    CVE-2026-56123 (GCVE-0-2026-56123)

    Vulnerability from cvelistv5 – Published: 2026-06-25 15:43 – Updated: 2026-06-26 02:03 X_Open Source
    VLAI
    Title
    socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser
    Summary
    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 through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    Assigner
    References
    Impacted products
    Vendor Product Version
    socat socat Affected: 1.8.0.0 , < 1.8.1.2 (custom)
    Create a notification for this product.
    Date Public
    2026-06-25 00:00
    Credits
    Tristan Madani (@TristanInSec)
    Show details on NVD website

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    CVE-2004-1484 (GCVE-0-2004-1484)

    Vulnerability from cvelistv5 – Published: 2005-02-13 05:00 – Updated: 2024-08-08 00:53
    VLAI
    Summary
    Format string vulnerability in the _msg function in error.c in socat 1.4.0.3 and earlier, when used as an HTTP proxy client and run with the -ly option, allows remote attackers or local users to execute arbitrary code via format string specifiers in a syslog message.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    Date Public
    2004-10-25 00:00
    Show details on NVD website

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