{"id":"CVE-2026-76466","revision":"c8824076eb32480ebf45d575ec1269d9","records":[{"revision":"c8824076eb32480ebf45d575ec1269d9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-76466","aliases":[],"title":"Cisco Expressway Series Remote Code Execution Vulnerability","description":"A vulnerability in the database service feature of Cisco Expressway Series could allow an unauthenticated, remote attacker with network access to a Cisco Expressway device to execute arbitrary operating system commands as root.\r\n\r\nThis vulnerability is due to the use of persistent cookies. Additionally, there is insufficient validation of client certificates when the TLS Verify Mode is set to Enabled for clustering, which means that client certificates are not validated. An attacker with possession of the cookies could exploit this vulnerability by connecting to the database service and invoking specific remote procedure call (RPC) commands. A successful exploit could allow the attacker to execute arbitrary commands as root on the underlying operating system of an affected device.\r\nNote: Cisco Expressway Series refers to Cisco Expressway Core (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.","state":0,"publishedAt":"2026-10-21T16:14:19.225+00:00","modifiedAt":"2026-10-22T23:04:48.699+00:00","affected":[{"ecosystem":"Vendor product","name":"Cisco TelePresence Video Communication Server (VCS) Expressway","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Cisco\",\n                    \"product\": \"Cisco TelePresence Video Communication Server (VCS) Expressway\",\n                    \"versions\": [\n                        {\n                            \"version\": \"X8.11.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.11.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.2.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.8.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.11.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.1.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.7.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.11.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.9.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.10.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.8.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.5.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.9.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.11.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.8.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.2.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.5.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.6.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.1.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.10.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.10.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.10.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.5.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.10.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X8.7.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.5.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.6.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.6.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X12.7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.0.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.2.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.0.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.0.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.0.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.0.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X14.3.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.4.\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.2.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.3.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.3.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.3.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.4.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.5.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.5.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"X15.5.3\",\n                            \"status\": \"affected\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unknown\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vcs-static-cred-hr7EWZ8t"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-76466","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-76466","identifiers":["CVE-2026-76466"]},"retained":false,"historicalAffected":[]}],"coverage":[]}