{"id":"CVE-2026-76300","kind":"vulnerability","aliases":["CVE-2026-76300"],"related":[],"title":"Cisco: internal review hardening release fixes resource lifetime flaws","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-2026-76300 are related to improper control of a resource through its lifetime and are grouped under the Common Weakness Enumeration (CWE) CWE-664.","summary":"Cisco reports multiple internally discovered flaws grouped under CWE-664, improper control of a resource through its lifetime, fixed in a software hardening release. The sources do not name the affected products or describe what an attacker could do.","severity":"unknown","cvss":null,"epss":0.0017,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cisco","vendor"],"not_affected_if":[],"how_to_check":null,"fix":"- Move to the software hardening release Cisco published for the affected product (version not stated in the sources).","status":"open","published_at":"2026-10-21T23:17:28+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","triaged_at":"2026-10-25T05:01:57+00:00","updated_at":"2026-10-25T05:01:57+00:00","category":"vendor","confidence":0.3,"triage":{"at":"2026-10-25T05:01:57Z","model":"claude-haiku-5-5","output":{"fix":"- Move to the software hardening release Cisco published for the affected product (version not stated in the sources).","reach":"unknown","title":"Cisco: internal review hardening release fixes resource lifetime flaws","impact":"medium","summary":"Cisco reports multiple internally discovered flaws grouped under CWE-664, improper control of a resource through its lifetime, fixed in a software hardening release. The sources do not name the affected products or describe what an attacker could do.","category":"vendor","nicknames":[],"who_cares":["cisco"],"confidence":0.3,"needs_auth":"unknown","worst_case":"unknown","analyst_note":"Find the Cisco advisory linked from the NVD entry to name the affected products, versions and the fixed release.","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":0.00051,"input_tokens":3395,"output_tokens":341,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':11A,14A,96C '-664':27B,119C '-76300':12A,15A,97C 'address':86C 'affect':48B 'attack':54B 'cisco':1A,16B,18B,59C,69C 'commit':62C 'common':114C 'comprehens':73C 'conduct':71C 'control':29B,102C 'could':55B 'cve':10A,13A,95C 'cwe':26B,117C,118C 'describ':51B 'discov':22B,89C 'enumer':116C 'fix':6A,36B 'flaw':9A,23B 'group':24B,111C 'harden':4A,40B,83C 'improp':28B,101C 'intern':2A,21B,74C,88C 'lifetim':8A,35B,108C 'multipl':20B,87C 'name':46B 'ongo':61C 'part':57C 'proactiv':64C 'product':49B,67C 'qualiti':68C 'relat':99C 'releas':5A,41B,84C 'report':19B 'resourc':7A,32B,105C 'result':79C 'review':3A,76C,78C 'secur':65C,75C 'softwar':39B,82C 'sourc':43B 'track':93C 'vendor':17B 'vulner':90C,92C 'weak':115C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T23:17:28+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76300","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76300","severity":null,"published_at":"2026-10-21T23:17:28+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-2026-76300","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76300","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"}