{"id":"CVE-2026-76528","kind":"vulnerability","aliases":["CVE-2026-76528"],"related":[],"title":"Cisco: hardening release fixes internal protection-mechanism flaws, details withheld","description":"As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76528 are related to protection mechanism failure and are grouped under the Common Weakness Enumeration (CWE) CWE-693.","summary":"Cisco reports a software hardening release that fixes several internally found flaws classed as CWE-693, protection mechanism failure. The sources give no product, versions or attacker capability, so the practical impact is unknown.","severity":"unknown","cvss":null,"epss":0.00134,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cisco","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-21T23:17:29+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","triaged_at":"2026-10-25T05:00:38+00:00","updated_at":"2026-10-25T05:00:38+00:00","category":"vendor","confidence":0.3,"triage":{"at":"2026-10-25T05:00:38Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"Cisco: hardening release fixes internal protection-mechanism flaws, details withheld","impact":"medium","summary":"Cisco reports a software hardening release that fixes several internally found flaws classed as CWE-693, protection mechanism failure. The sources give no product, versions or attacker capability, so the practical impact is unknown.","category":"vendor","nicknames":[],"who_cares":["cisco"],"confidence":0.3,"needs_auth":"unknown","worst_case":"unknown; protection mechanism bypass, extent not stated","analyst_note":"Find the Cisco advisory this CVE belongs to at https://nvd.nist.gov/vuln/detail/CVE-2026-76528 to get affected products, fixed versions and attack vector.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000519,"input_tokens":3390,"output_tokens":360,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A,94C '-693':35B,112C '-76528':14A,17A,95C 'address':84C 'attack':46B 'capabl':47B 'cisco':1A,18B,20B,57C,67C 'class':32B 'commit':60C 'common':107C 'comprehens':71C 'conduct':69C 'cve':12A,15A,93C 'cwe':34B,110C,111C 'detail':10A 'discov':87C 'enumer':109C 'failur':38B,101C 'fix':4A,27B 'flaw':9A,31B 'found':30B 'give':41B 'group':104C 'harden':2A,24B,81C 'impact':51B 'intern':5A,29B,72C,86C 'mechan':8A,37B,100C 'multipl':85C 'ongo':59C 'part':55C 'practic':50B 'proactiv':62C 'product':43B,65C 'protect':7A,36B,99C 'protection-mechan':6A 'qualiti':66C 'relat':97C 'releas':3A,25B,82C 'report':21B 'result':77C 'review':74C,76C 'secur':63C,73C 'sever':28B 'softwar':23B,80C 'sourc':40B 'track':91C 'unknown':53B 'vendor':19B 'version':44B 'vulner':88C,90C 'weak':108C 'withheld':11A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T23:17:29+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76528","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76528","severity":null,"published_at":"2026-10-21T23:17:29+00:00","modified_at":"2026-10-22T16:57:10+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-76528","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76528","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:52+00:00","fetched_at":"2026-10-24T07:15:52+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"}