{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-20028",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2025-10-08T11:59:15.352Z",
        "datePublished": "2026-08-05T16:18:08.371Z",
        "dateUpdated": "2026-08-05T17:19:46.116Z"
    },
    "containers": {
        "cna": {
            "title": "Cisco Terminal Services Agent Firewall Rules Bypass Vulnerability",
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N",
                        "baseScore": 5,
                        "baseSeverity": "MEDIUM",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE"
                    }
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the network driver of Cisco Terminal Service (TS) Agent could allow an authenticated, remote attacker to bypass firewall rules that are associated with the account of the attacker.\r\n\r\nThis vulnerability is due to an incorrect mapping of network connections to user accounts. An attacker with at least user-level credentials could exploit this vulnerability by sending crafted network traffic to an affected device. A successful exploit could allow the attacker to inherit the firewall rules associated with a different user in the system."
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ts-agent-fw-bypass-MYBTMrev",
                    "name": "cisco-sa-ts-agent-fw-bypass-MYBTMrev"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
                }
            ],
            "source": {
                "advisory": "cisco-sa-ts-agent-fw-bypass-MYBTMrev",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCws82513"
                ]
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Incorrect Privilege Assignment",
                            "type": "cwe",
                            "cweId": "CWE-266"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco Terminal Services Agent",
                    "versions": [
                        {
                            "version": "TSAgent-1.3",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.2",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.4",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.0",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "TSAgent-1.1",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }
            ],
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2026-08-05T16:18:08.371Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-05T17:19:39.672252Z",
                                "id": "CVE-2026-20028",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-05T17:19:46.116Z"
                }
            }
        ]
    }
}