{
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    "aggregate_severity": {
      "text": "Medium"
    },
    "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/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/vex/2025/cve-2025-42921-els_os-almalinux9_2esu.json"
      }
    ],
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      "generator": {
        "date": "2026-05-07T18:25:06Z",
        "engine": {
          "name": "pyCSAF"
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      },
      "id": "CVE-2025-42921-ELS_OS-ALMALINUX9.2ESU",
      "initial_release_date": "2025-04-17T16:15:00Z",
      "revision_history": [
        {
          "date": "2025-04-17T16:15:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-11-29T11:34:26Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-12-23T19:08:30Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-01-19T22:23:10Z",
          "number": "4",
          "summary": "Update document"
        },
        {
          "date": "2026-04-30T22:46:07Z",
          "number": "5",
          "summary": "Update document"
        },
        {
          "date": "2026-05-07T18:25:06Z",
          "number": "6",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "6"
    },
    "title": "Security update on CVE-2025-42921"
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-42921",
      "cwe": {
        "id": "CWE-297",
        "name": "Improper Validation of Certificate with Host Mismatch"
      },
      "notes": [
        {
          "category": "description",
          "text": "In JetBrains Toolbox App before 2.6 host key verification was missing in SSH plugin",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        },
        {
          "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"
        }
      ],
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          "AlmaLinux-9.2:toolbox-tests-0:0.0.99.3-10.el9.tuxcare.els1.x86_64",
          "AlmaLinux-9.2:toolbox-tests-0:0.0.99.3-10.el9_2.tuxcare.els2.x86_64"
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-42921"
        },
        {
          "category": "external",
          "summary": "https://www.jetbrains.com/privacy-security/issues-fixed/",
          "url": "https://www.jetbrains.com/privacy-security/issues-fixed/"
        }
      ],
      "release_date": "2025-04-17T16:15:00Z",
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "This flaw is confined to the JetBrains Toolbox desktop app’s SSH plugin and does not affect the system OpenSSH client or any server-side SSH daemons, so environments that do not install or use Toolbox are not exposed. Where Toolbox is present, exploitation requires an active on‑path attacker during a connection initiated specifically through this plugin, with only limited confidentiality/integrity impact and no availability impact. In managed server/VM deployments, these conditions make the issue low priority relative to remotely exploitable or privilege‑escalation vulnerabilities.",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
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      "threats": [
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          "category": "impact",
          "details": "Moderate"
        },
        {
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          "date": "2026-05-07T17:20:15.106684Z",
          "details": "This flaw is confined to the JetBrains Toolbox desktop app’s SSH plugin and does not affect the system OpenSSH client or any server-side SSH daemons, so environments that do not install or use Toolbox are not exposed. Where Toolbox is present, exploitation requires an active on‑path attacker during a connection initiated specifically through this plugin, with only limited confidentiality/integrity impact and no availability impact. In managed server/VM deployments, these conditions make the issue low priority relative to remotely exploitable or privilege‑escalation vulnerabilities.",
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}