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EUVD-2026-352361

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:21

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:21:17.958771+00:00",
  "id": "EUVD-2026-352361"
}

CVE-2026-20131 (GCVE-0-2026-20131)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:17 – Updated: 2026-08-14 03:55

Title

Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability

Summary

A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.

Severity

10 (Critical)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-04 00:00 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

cisco mitre root Scorecard

References

3 references

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…
https://aws.amazon.com/blogs/security/amazon-thre…	third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Secure Firewall Management Center (FMC)	Affected: 7.0.0 Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.1.0 Affected: 6.4.0.13 Affected: 7.0.1.1 Affected: 6.4.0.14 Affected: 7.1.0.1 Affected: 7.0.2 Affected: 6.4.0.15 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.1.0.2 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 6.4.0.16 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.3.1 Affected: 7.2.3 Affected: 7.1.0.3 Affected: 7.2.3.1 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.4.1 Affected: 7.2.5 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 6.4.0.17 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.4.1.1 Affected: 7.0.6.2 Affected: 6.4.0.18 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.2.10.1 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.2.10.2 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.4.3 Affected: 7.7.11 Affected: 7.6.4 Affected: 10.0.0 Affected: 7.4.4 Affected: 7.4.5

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20131",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-04T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-03-19",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20131"
              },
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        "providerMetadata": {
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            "url": "https://aws.amazon.com/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/"
          },
          {
            "tags": [
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            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20131"
          }
        ],
        "timeline": [
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            "time": "2026-03-19T00:00:00.000Z",
            "value": "CVE-2026-20131 added to CISA KEV"
          }
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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            {
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            {
              "status": "affected",
              "version": "7.0.6"
            },
            {
              "status": "affected",
              "version": "7.2.4.1"
            },
            {
              "status": "affected",
              "version": "7.2.5"
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            {
              "status": "affected",
              "version": "7.3.1.1"
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            {
              "status": "affected",
              "version": "7.4.0"
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            {
              "status": "affected",
              "version": "6.4.0.17"
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              "status": "affected",
              "version": "7.0.6.1"
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              "status": "affected",
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              "version": "7.4.1"
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            {
              "status": "affected",
              "version": "7.2.6"
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            {
              "status": "affected",
              "version": "7.4.1.1"
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            {
              "status": "affected",
              "version": "7.0.6.2"
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            {
              "status": "affected",
              "version": "6.4.0.18"
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              "version": "7.6.0"
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              "version": "7.2.8.1"
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              "version": "7.0.6.3"
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              "version": "7.4.2.1"
            },
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              "version": "7.2.9"
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              "status": "affected",
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              "version": "7.4.2.2"
            },
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              "version": "7.0.8.1"
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            },
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        {
          "lang": "en",
          "value": "A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root\u0026nbsp;on an affected device.\r\n\r\nThis vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root.\r\nNote: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "In March 2026, the Cisco Product Security Incident Response Team (PSIRT) became aware of attempted exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability."
        }
      ],
      "metrics": [
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            "attackVector": "NETWORK",
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            "baseSeverity": "CRITICAL",
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              "description": "Deserialization of Untrusted Data",
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        "discovery": "INTERNAL"
      },
      "title": "Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability"
    }
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    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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    "datePublished": "2026-03-04T17:17:56.008Z",
    "dateReserved": "2025-10-08T11:59:15.380Z",
    "dateUpdated": "2026-08-14T03:55:24.856Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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EUVD-2026-352361

CVE-2026-20131 (GCVE-0-2026-20131)

Tags

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Nomenclature

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