Vulnerability-Lookup

CVE-2026-20079 (GCVE-0-2026-20079)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:17 – Updated: 2026-03-05 14:06

Summary

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.

Severity ?

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

cisco

References

URL

Tags

https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

	Vendor	Product	Version
	Cisco	Cisco Secure Firewall Management Center (FMC)	Affected: 7.0.0 Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.0.1.1 Affected: 7.0.2 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.0.4 Affected: 7.0.5 Affected: 7.0.6 Affected: 7.0.6.1 Affected: 7.0.6.2 Affected: 7.0.6.3 Affected: 7.0.7 Affected: 7.0.8 Affected: 7.0.8.1 Affected: 7.1.0 Affected: 7.1.0.1 Affected: 7.1.0.2 Affected: 7.1.0.3 Affected: 7.2.0 Affected: 7.2.1 Affected: 7.2.2 Affected: 7.2.0.1 Affected: 7.2.3 Affected: 7.2.3.1 Affected: 7.2.4 Affected: 7.2.4.1 Affected: 7.2.5 Affected: 7.2.5.1 Affected: 7.2.6 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.2.8 Affected: 7.2.8.1 Affected: 7.2.9 Affected: 7.2.10 Affected: 7.2.10.2 Affected: 7.2.10.1 Affected: 7.3.0 Affected: 7.3.1 Affected: 7.3.1.1 Affected: 7.3.1.2 Affected: 7.4.0 Affected: 7.4.1 Affected: 7.4.1.1 Affected: 7.4.2 Affected: 7.4.2.1 Affected: 7.4.2.2 Affected: 7.4.2.3 Affected: 7.4.2.4 Affected: 7.4.3 Affected: 7.6.0 Affected: 7.6.1 Affected: 7.6.2 Affected: 7.6.2.1 Affected: 7.6.3 Affected: 7.7.0 Affected: 7.7.10 Affected: 7.7.10.1 Affected: 7.7.11

Show details on NVD website

JSON

To clipboard

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NCSC-2026-0076

Vulnerability from csaf_ncscnl - Published: 2026-03-04 20:49 - Updated: 2026-03-04 20:49

Summary

Kwetsbaarheden verholpen in Cisco Secure Firewall Management Center

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

De kwetsbaarheid met kenmerk CVE-2026-20079 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Een ongeauthenticeerde externe kwaadwillende kan de authenticatiecontroles omzeilen door een onjuist systeemproces dat bij het opstarten is aangemaakt te misbruiken. De kwaadwillende kan deze kwetsbaarheid misbruiken door speciaal geprepareerde HTTP-verzoeken naar een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen verschillende scripts en commando’s uit te voeren die root-toegang tot het apparaat mogelijk maken. De kwetsbaarheid met kenmerk CVE-2026-20131 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Deze kwetsbaarheid stelt ongeauthenticeerde externe kwaadwillende in staat om willekeurige Java-code uit te voeren met root-rechten. De kwetsbaarheid wordt veroorzaakt door de onveilige deserialisatie van door de gebruiker aangeleverde Java-byte-stromen. Een kwaadwillende kan deze kwetsbaarheid misbruiken door een speciaal geprepareerd, geserialiseerd Java-object naar de webgebaseerde beheerinterface van een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen om willekeurige code op het apparaat uit te voeren en de rechten te verhogen tot root-niveau. Als de beheerinterface van Cisco Secure Firewall Management Center geen publieke internettoegang heeft, wordt het aanvalsoppervlak verkleind. Het is niet gebruikelijk om een managementinterface direct publiekelijk aan het internet bloot te stellen. Indien jouw organisatie gebruikmaakt van Cisco Security Cloud Control Firewall Management, dan betreft dit een SaaS-dienst (Software-as-a-Service) die door Cisco Systems automatisch wordt bijgewerkt als onderdeel van regulier onderhoud. Er is in dat geval geen actie van de gebruiker vereist. Het NCSC verwacht op korte termijn een publieke PoC en grootschalige pogingen tot misbruik. Het NCSC adviseert met klem de update zo spoedig mogelijk te installeren.

Interpretaties

Oplossingen

Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Kans

high

Schade

high

CWE-288

Authentication Bypass Using an Alternate Path or Channel

CWE-502

Deserialization of Untrusted Data

JSON

To clipboard

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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": "De kwetsbaarheid met kenmerk CVE-2026-20079 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Een ongeauthenticeerde externe kwaadwillende kan de authenticatiecontroles omzeilen door een onjuist systeemproces dat bij het opstarten is aangemaakt te misbruiken. De kwaadwillende kan deze kwetsbaarheid misbruiken door speciaal geprepareerde HTTP-verzoeken naar een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen verschillende scripts en commando\u2019s uit te voeren die root-toegang tot het apparaat mogelijk maken.\n\nDe kwetsbaarheid met kenmerk CVE-2026-20131 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Deze kwetsbaarheid stelt ongeauthenticeerde externe kwaadwillende in staat om willekeurige Java-code uit te voeren met root-rechten. De kwetsbaarheid wordt veroorzaakt door de onveilige deserialisatie van door de gebruiker aangeleverde Java-byte-stromen. Een kwaadwillende kan deze kwetsbaarheid misbruiken door een speciaal geprepareerd, geserialiseerd Java-object naar de webgebaseerde beheerinterface van een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen om willekeurige code op het apparaat uit te voeren en de rechten te verhogen tot root-niveau.\n\nAls de beheerinterface van Cisco Secure Firewall Management Center geen publieke internettoegang heeft, wordt het aanvalsoppervlak verkleind. Het is niet gebruikelijk om een managementinterface direct publiekelijk aan het internet bloot te stellen.\n\nIndien jouw organisatie gebruikmaakt van Cisco Security Cloud Control Firewall Management, dan betreft dit een SaaS-dienst (Software-as-a-Service) die door Cisco Systems automatisch wordt bijgewerkt als onderdeel van regulier onderhoud. Er is in dat geval geen actie van de gebruiker vereist.\n\nHet NCSC verwacht op korte termijn een publieke PoC en grootschalige pogingen tot misbruik. Het NCSC adviseert met klem de update zo spoedig mogelijk te installeren.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": " ",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Authentication Bypass Using an Alternate Path or Channel",
        "title": "CWE-288"
      },
      {
        "category": "general",
        "text": "Deserialization of Untrusted Data",
        "title": "CWE-502"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-rce-NKhnULJh"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Cisco Secure Firewall Management Center",
    "tracking": {
      "current_release_date": "2026-03-04T20:49:12.211658Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0076",
      "initial_release_date": "2026-03-04T20:49:12.211658Z",
      "revision_history": [
        {
          "date": "2026-03-04T20:49:12.211658Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco Secure Firewall Management Center (FMC)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-2"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco Secure Firewall Management Center (FMC) Appliances"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20079",
      "cwe": {
        "id": "CWE-288",
        "name": "Authentication Bypass Using an Alternate Path or Channel"
      },
      "notes": [
        {
          "category": "other",
          "text": "Authentication Bypass Using an Alternate Path or Channel",
          "title": "CWE-288"
        },
        {
          "category": "description",
          "text": "A vulnerability in Cisco Secure Firewall Management Center\u0027s web interface allows unauthenticated remote attackers to bypass authentication and execute scripts to gain root access to the underlying operating system.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-20079 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20079.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2"
          ]
        }
      ],
      "title": "CVE-2026-20079"
    },
    {
      "cve": "CVE-2026-20131",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "notes": [
        {
          "category": "other",
          "text": "Deserialization of Untrusted Data",
          "title": "CWE-502"
        },
        {
          "category": "description",
          "text": "A critical vulnerability in Cisco Secure Firewall Management Center\u0027s web interface allows unauthenticated remote attackers to execute arbitrary Java code as root via insecure deserialization of user-supplied Java byte streams.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-20131 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20131.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2"
          ]
        }
      ],
      "title": "CVE-2026-20131"
    }
  ]
}

GHSA-MV8W-C2QV-CGRG

Vulnerability from github – Published: 2026-03-04 18:31 – Updated: 2026-03-04 18:31

Details

This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.

Severity ?

10.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20079"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-04T18:16:24Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.\n\n This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.",
  "id": "GHSA-mv8w-c2qv-cgrg",
  "modified": "2026-03-04T18:31:55Z",
  "published": "2026-03-04T18:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20079"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CERTFR-2026-AVI-0242

Vulnerability from certfr_avis - Published: 2026-03-05 - Updated: 2026-03-05

De multiples vulnérabilités ont été découvertes dans les produits Cisco. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à la confidentialité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Cisco	Firewall Threat Defense	Firepower Threat Defense sans les derniers correctifs de sécurité
Cisco	Firewall Management Center	Firewall Management Center sans les derniers correctifs de sécurité
Cisco	Adaptive Security Appliance	Adaptive Security Appliance sans les derniers correctifs de sécurité

References

Title

Publication Time

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-20079 (GCVE-0-2026-20079)

NCSC-2026-0076

GHSA-MV8W-C2QV-CGRG

CERTFR-2026-AVI-0242

Solutions

Tags

Sightings

Nomenclature