NCSC-2026-0094

Vulnerability from csaf_ncscnl - Published: 2026-03-12 14:44 - Updated: 2026-03-12 14:44
Summary
Kwetsbaarheden verholpen in Cisco IOS XR

Notes

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten
Cisco heeft kwetsbaarheden verholpen in Cisco IOS XR Software.
Interpretaties
De kwetsbaarheden bevinden zich in de command-line interface (CLI) van Cisco IOS XR, waardoor geauthenticeerde lokale aanvallers willekeurige root-level commando's kunnen uitvoeren of volledige administratieve privileges kunnen verkrijgen. Daarnaast is er een probleem met de taakgroeptoewijzingsmechanisme voor bepaalde CLI-commando's, wat aanvallers in staat stelt om beveiligingscontroles te omzeilen. Een andere kwetsbaarheid in de IS-IS multi-instance routing functie laat een niet-geauthenticeerde, aangrenzende aanvaller toe om het IS-IS proces onverwacht te laten herstarten, wat leidt tot tijdelijke netwerkconnectiviteitsverlies. Ook is er een kwetsbaarheid die specifieke NCS 5500 en NCS 5700 apparaten treft, waarbij een niet-geauthenticeerde externe aanvaller packet corruptie kan veroorzaken tijdens zware verkeersomstandigheden, wat resulteert in een Denial-of-Service situatie.
Oplossingen
Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans
medium
Schade
high
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-264
Permissions, Privileges, and Access Controls
CWE-460
Improper Cleanup on Thrown Exception
CWE-1287
Improper Validation of Specified Type of Input
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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
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    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Cisco heeft kwetsbaarheden verholpen in Cisco IOS XR Software.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden bevinden zich in de command-line interface (CLI) van Cisco IOS XR, waardoor geauthenticeerde lokale aanvallers willekeurige root-level commando\u0027s kunnen uitvoeren of volledige administratieve privileges kunnen verkrijgen. Daarnaast is er een probleem met de taakgroeptoewijzingsmechanisme voor bepaalde CLI-commando\u0027s, wat aanvallers in staat stelt om beveiligingscontroles te omzeilen. Een andere kwetsbaarheid in de IS-IS multi-instance routing functie laat een niet-geauthenticeerde, aangrenzende aanvaller toe om het IS-IS proces onverwacht te laten herstarten, wat leidt tot tijdelijke netwerkconnectiviteitsverlies. Ook is er een kwetsbaarheid die specifieke NCS 5500 en NCS 5700 apparaten treft, waarbij een niet-geauthenticeerde externe aanvaller packet corruptie kan veroorzaken tijdens zware verkeersomstandigheden, wat resulteert in een Denial-of-Service situatie.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
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      },
      {
        "category": "general",
        "text": "Permissions, Privileges, and Access Controls",
        "title": "CWE-264"
      },
      {
        "category": "general",
        "text": "Improper Cleanup on Thrown Exception",
        "title": "CWE-460"
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      {
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        "title": "CWE-1287"
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    ],
    "title": "Kwetsbaarheden verholpen in Cisco IOS XR",
    "tracking": {
      "current_release_date": "2026-03-12T14:44:08.106602Z",
      "generator": {
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      },
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        {
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          "title": "Summary"
        }
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}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.