{"id":"CVE-2026-76494","kind":"vulnerability","aliases":["CVE-2026-76494"],"related":[],"title":"Cisco Expressway: code injection flaws allow code execution, patched in hardening releases","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.  \r\n\r\nThe vulnerabilities tracked by CVE-2026-76494 are related to issues concerning code injections that are grouped under the Common Weakness Enumeration (CWE) Base CWE-94.","summary":"Cisco Expressway Series contains code injection flaws classified as CWE-94, which are tracked under CVE-2026-76494. The sources do not state the exact attacker capability beyond the CWE, but CWE-94 issues generally let an attacker run code on the affected system.","severity":"high","cvss":7.8,"epss":0.00152,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cisco-expressway","infrastructure","self-hosted","video-collaboration"],"not_affected_if":[],"how_to_check":"- unknown","fix":"- Move Cisco Expressway Series to the fixed release named in Cisco's advisory for CVE-2026-76494 (version unknown from the sources)","status":"open","published_at":"2026-10-21T17:19:08+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","triaged_at":"2026-10-25T03:08:21+00:00","updated_at":"2026-10-25T03:08:21+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-10-25T03:08:21Z","model":"claude-haiku-5-5","output":{"fix":"- Move Cisco Expressway Series to the fixed release named in Cisco's advisory for CVE-2026-76494 (version unknown from the sources)","reach":"unknown","title":"Cisco Expressway: code injection flaws allow code execution, patched in hardening releases","impact":"high","summary":"Cisco Expressway Series contains code injection flaws classified as CWE-94, which are tracked under CVE-2026-76494. The sources do not state the exact attacker capability beyond the CWE, but CWE-94 issues generally let an attacker run code on the affected system.","category":"infrastructure","nicknames":[],"who_cares":["cisco-expressway","self-hosted","video-collaboration"],"confidence":0.4,"needs_auth":"unknown","worst_case":"code injection may let an attacker run code on the appliance","analyst_note":"Find Cisco's security advisory for CVE-2026-76494 to get the affected and fixed Expressway versions, the attack vector and whether authentication is required; check the NVD page https://nvd.nist.gov/vuln/detail/CVE-2026-76494.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations running Cisco Expressway Series software, the video and collaboration gateway. The sources do not describe which configurations or roles are exposed, so whether a given deployment is affected is unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000603,"input_tokens":3413,"output_tokens":524,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A,45B,118C '-76494':15A,18A,46B,119C '-94':39B,61B,138C 'address':108C 'affect':71B 'allow':6A 'attack':54B,66B 'base':136C 'beyond':56B 'capabl':55B 'cisco':1A,20B,29B,76C,87C 'cisco-expressway':19B 'classifi':36B 'code':3A,7A,33B,68B,125C 'collabor':28B 'commit':79C 'common':132C 'comprehens':96C 'concern':124C 'conduct':94C 'contain':32B 'cve':13A,16A,44B,117C 'cwe':38B,58B,60B,135C,137C 'discov':111C 'engin':91C 'enumer':134C 'exact':53B 'execut':8A 'expressway':2A,21B,30B,88C 'flaw':5A,35B 'general':63B 'group':129C 'harden':11A,105C 'host':25B 'infrastructur':22B 'inject':4A,34B,126C 'intern':97C,110C 'issu':62B,123C 'let':64B 'multipl':109C 'ongo':78C 'part':74C 'patch':9A 'proactiv':81C 'product':84C 'qualiti':85C 'relat':121C 'releas':12A,106C 'result':102C 'review':99C,101C 'run':67B 'secur':82C,98C 'self':24B 'self-host':23B 'seri':31B,89C 'softwar':90C,104C 'sourc':48B 'state':51B 'system':72B 'team':92C 'track':42B,115C 'video':27B 'video-collabor':26B 'vulner':112C,114C 'weak':133C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Cisco Expressway Series software, the video and collaboration gateway. The sources do not describe which configurations or roles are exposed, so whether a given deployment is affected is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T17:19:08+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"psirt@cisco.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76494","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76494","severity":null,"published_at":"2026-10-21T17:19:08+00:00","modified_at":"2026-10-22T23:19:08+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-76494","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76494","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:54+00:00","fetched_at":"2026-10-24T13:15:54+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}