{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-76466", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-76466", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-10-21T16:14:19.225Z", "updatedAt": "2026-10-22T23:04:48.699Z", "importedAt": "2026-10-24T01:58:30.346Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Cisco Expressway Series Remote Code Execution Vulnerability", "summary": "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.", "affected": [ { "vendor": "Cisco", "product": "Cisco TelePresence Video Communication Server (VCS) Expressway", "defaultStatus": "unknown", "versions": [ { "version": "X8.11.2", "status": "affected" }, { "version": "X8.6", "status": "affected" }, { "version": "X8.11.3", "status": "affected" }, { "version": "X8.2.2", "status": "affected" }, { "version": "X8.8.3", "status": "affected" }, { "version": "X8.11.0", "status": "affected" }, { "version": "X12.5.2", "status": "affected" }, { "version": "X8.1.1", "status": "affected" }, { "version": "X8.9", "status": "affected" }, { "version": "X12.5.1", "status": "affected" }, { "version": "X12.5.6", "status": "affected" }, { "version": "X8.7.3", "status": "affected" }, { "version": "X12.6.0", "status": "affected" }, { "version": "X8.11.1", "status": "affected" }, { "version": "X8.5", "status": "affected" }, { "version": "X8.9.1", "status": "affected" }, { "version": "X8.10.2", "status": "affected" }, { "version": "X8.8.2", "status": "affected" }, { "version": "X8.5.3", "status": "affected" }, { "version": "X8.1", "status": "affected" }, { "version": "X8.9.2", "status": "affected" }, { "version": "X8.11.4", "status": "affected" }, { "version": "X12.5.4", "status": "affected" }, { "version": "X8.8.1", "status": "affected" }, { "version": "X8.2.1", "status": "affected" }, { "version": "X8.5.1", "status": "affected" }, { "version": "X8.6.1", "status": "affected" }, { "version": "X8.1.2", "status": "affected" }, { "version": "X8.8", "status": "affected" }, { "version": "X8.10.0", "status": "affected" }, { "version": "X12.5.3", "status": "affected" }, { "version": "X8.10.1", "status": "affected" }, { "version": "X12.5.7", "status": "affected" }, { "version": "X8.10.3", "status": "affected" }, { "version": "X8.7.1", "status": "affected" }, { "version": "X8.2", "status": "affected" }, { "version": "X12.5.8", "status": "affected" }, { "version": "X8.7", "status": "affected" }, { "version": "X8.5.2", "status": "affected" }, { "version": "X12.5.9", "status": "affected" }, { "version": "X12.5.0", "status": "affected" }, { "version": "X8.10.4", "status": "affected" }, { "version": "X8.7.2", "status": "affected" }, { "version": "X12.5.5", "status": "affected" }, { "version": "X12.6.1", "status": "affected" }, { "version": "X12.6.2", "status": "affected" }, { "version": "X12.6.3", "status": "affected" }, { "version": "X12.6.4", "status": "affected" }, { "version": "X12.7.0", "status": "affected" }, { "version": "X12.7.1", "status": "affected" }, { "version": "X14.0.0", "status": "affected" }, { "version": "X14.0.1", "status": "affected" }, { "version": "X14.0.2", "status": "affected" }, { "version": "X14.0.3", "status": "affected" }, { "version": "X14.0.4", "status": "affected" }, { "version": "X14.0.5", "status": "affected" }, { "version": "X14.0.6", "status": "affected" }, { "version": "X14.0.7", "status": "affected" }, { "version": "X14.0.8", "status": "affected" }, { "version": "X14.2.0", "status": "affected" }, { "version": "X14.0.9", "status": "affected" }, { "version": "X14.2.1", "status": "affected" }, { "version": "X14.2.2", "status": "affected" }, { "version": "X14.0.11", "status": "affected" }, { "version": "X14.2.5", "status": "affected" }, { "version": "X14.0.10", "status": "affected" }, { "version": "X14.2.6", "status": "affected" }, { "version": "X14.2.7", "status": "affected" }, { "version": "X14.3.0", "status": "affected" }, { "version": "X14.3.1", "status": "affected" }, { "version": "X14.3.2", "status": "affected" }, { "version": "X14.3.3", "status": "affected" }, { "version": "X15.0.0", "status": "affected" }, { "version": "X14.3.4", "status": "affected" }, { "version": "X14.3.5", "status": "affected" }, { "version": "X15.0.1", "status": "affected" }, { "version": "X15.0.2", "status": "affected" }, { "version": "X15.0.3", "status": "affected" }, { "version": "X14.3.6", "status": "affected" }, { "version": "X15.2.0", "status": "affected" }, { "version": "X15.2.1", "status": "affected" }, { "version": "X15.2.2", "status": "affected" }, { "version": "X15.2.3", "status": "affected" }, { "version": "X14.3.7", "status": "affected" }, { "version": "X15.2.4.", "status": "affected" }, { "version": "X15.2.4", "status": "affected" }, { "version": "X15.3.0", "status": "affected" }, { "version": "X15.3.1", "status": "affected" }, { "version": "X15.3.2", "status": "affected" }, { "version": "X15.4.0", "status": "affected" }, { "version": "X15.5.0", "status": "affected" }, { "version": "X15.5.1", "status": "affected" }, { "version": "X15.5.2", "status": "affected" }, { "version": "X15.5.3", "status": "affected" } ] } ] } } }