{
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      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
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      "contact_details": "https://tuxcare.com/contact/",
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        "url": "https://security.tuxcare.com/csaf/v2/els_os/rhel7els/vex/2026/cve-2026-55200-els_os-rhel7els.json"
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        "date": "2026-10-27T19:02:25Z",
        "engine": {
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      "id": "CVE-2026-55200-ELS_OS-RHEL7ELS",
      "initial_release_date": "2026-06-17T20:17:00Z",
      "revision_history": [
        {
          "date": "2026-06-17T20:17:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-27T19:02:25Z",
          "number": "2",
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        }
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      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2026-55200"
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-55200",
      "cwe": {
        "id": "CWE-680",
        "name": "Integer Overflow to Buffer Overflow"
      },
      "notes": [
        {
          "category": "description",
          "text": "libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
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          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-55200"
        },
        {
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          "summary": "https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8",
          "url": "https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8"
        },
        {
          "category": "external",
          "summary": "https://github.com/libssh2/libssh2/pull/2052",
          "url": "https://github.com/libssh2/libssh2/pull/2052"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c",
          "url": "https://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c"
        },
        {
          "category": "external",
          "summary": "https://web.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-poc",
          "url": "https://web.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-poc"
        }
      ],
      "release_date": "2026-06-17T20:17:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "date": "2026-10-23T11:13:58.237843Z",
          "details": "critical",
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}