NCSC-2026-0409

Vulnerability from csaf_ncscnl - Published: 2026-10-09 07:12 - Updated: 2026-10-09 07:12
Summary
Kwetsbaarheden verholpen in Cisco APIC
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 meerdere kwetsbaarheden verholpen in Cisco Application Policy Infrastructure Controller (APIC).
Interpretaties: De kwetsbaarheden betreffen onder andere onvoldoende inputvalidatie in de webgebaseerde management API, waardoor een geauthenticeerde aanvaller met geldige administratieve rechten willekeurige commando's met rootprivileges kan uitvoeren. Daarnaast is er een probleem in de export policies functionaliteit die onvoldoende toegangsbescherming biedt, wat kan leiden tot ongeautoriseerde toegang tot gevoelige bestanden en privilege-escalatie naar rootniveau. Verder zijn er kwetsbaarheden geïdentificeerd die verband houden met onjuiste toegangcontrole, onjuiste neutralisatie van invoer en onjuiste resourcecontrole. Deze kunnen door een aanvaller worden misbruikt om de beveiliging van het systeem te omzeilen of systeembronnen onjuist te beheren.
Oplossingen: Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-544: Missing Standardized Error Handling Mechanism
CVE-2026-20321

A vulnerability in Cisco APIC's web-based management API allows an authenticated attacker with administrative credentials to execute arbitrary root-level commands due to insufficient input validation.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CWE-544 - Missing Standardized Error Handling Mechanism
Affected products
Product Identifier Version Remediation
vers:unknown/*
Cisco / Cisco Application Policy Infrastructure Controller (APIC)
 vers:unknown/*
CVE-2026-76488

A vulnerability in Cisco APIC's export policies functionality allows authenticated attackers with valid administrative credentials to access sensitive files and potentially escalate privileges to root due to insufficient access controls.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Affected products
Known affected 1 product, the same list as for CVE-2026-20321
CVE-2026-76498

Cisco's APIC engineering team conducted an internal security review resulting in software hardening releases that address multiple vulnerabilities related to improper access control (CVE-2026-76498, CWE-284).

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Known affected 1 product, the same list as for CVE-2026-20321
CVE-2026-76499

Cisco's APIC engineering team conducted an internal security review resulting in software hardening releases that address multiple vulnerabilities related to improper neutralization issues, including those classified under CWE-707 and tracked by CVE-2026-76499.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Known affected 1 product, the same list as for CVE-2026-20321
CVE-2026-76500

Cisco's APIC engineering team conducted an internal security review resulting in software hardening releases that address multiple vulnerabilities, including those related to improper resource control tracked under CVE-2026-76500 and CWE-664.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Known affected 1 product, the same list as for CVE-2026-20321
References
To clipboard 

{
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    "distribution": {
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    "notes": [
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        "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 meerdere kwetsbaarheden verholpen in Cisco Application Policy Infrastructure Controller (APIC).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden betreffen onder andere onvoldoende inputvalidatie in de webgebaseerde management API, waardoor een geauthenticeerde aanvaller met geldige administratieve rechten willekeurige commando\u0027s met rootprivileges kan uitvoeren. Daarnaast is er een probleem in de export policies functionaliteit die onvoldoende toegangsbescherming biedt, wat kan leiden tot ongeautoriseerde toegang tot gevoelige bestanden en privilege-escalatie naar rootniveau. Verder zijn er kwetsbaarheden ge\u00efdentificeerd die verband houden met onjuiste toegangcontrole, onjuiste neutralisatie van invoer en onjuiste resourcecontrole. Deze kunnen door een aanvaller worden misbruikt om de beveiliging van het systeem te omzeilen of systeembronnen onjuist te beheren.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
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        "title": "Oplossingen"
      },
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    "title": "Kwetsbaarheden verholpen in Cisco APIC",
    "tracking": {
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.