{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T16:41:23Z","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","advisory":{"id":"cisco-sa-20180502-wlc-ip","slug":"cisco-sa-20180502-wlc-ip","vendor":"Cisco","title":"Cisco Wireless LAN Controller IP Fragment Reassembly Denial of Service Vulnerability","summary":"A vulnerability in the IP Version 4 (IPv4) fragment reassembly function of Cisco 3500, 5500, and 8500 Series Wireless LAN Controller Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a corruption of an internal data structure process that occurs when the affected software reassembles certain IPv4 packets. An attacker could exploit this vulnerability by sending certain malformed IPv4 fragments to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip","severity":"High","published_at":"2018-05-02T16:00:00Z","updated_at":"2018-05-02T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip/csaf/cisco-sa-20180502-wlc-ip.json","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure."},"freshness":{"last_source_refreshed_at":"2026-07-21T05:16:34Z","latest_source_refresh_at":"2026-07-21T05:16:34Z","oldest_source_refresh_at":"2026-07-21T03:00:03Z","all_sources_fresh":true,"sources":[{"source":"cisco_advisories","label":"Cisco advisories","last_success_at":"2026-07-21T03:00:03Z","stale":false},{"source":"cisco_csaf","label":"Cisco CSAF","last_success_at":"2026-07-21T05:14:24Z","stale":false},{"source":"nvd_cves","label":"NVD CVEs","last_success_at":"2026-07-21T05:16:30Z","stale":false},{"source":"cisa_kev","label":"CISA KEV","last_success_at":"2026-07-21T05:16:31Z","stale":false},{"source":"first_epss","label":"EPSS","last_success_at":"2026-07-21T05:16:34Z","stale":false}]},"summary":{"cve_count":1,"visible_product_count":3,"public_evidence_count":3,"kev_count":0,"highest_epss":0.02483},"cves":[{"id":"CVE-2018-0252","kev":false,"epss":{"score":0.02483,"percentile":0.82825,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"}}],"public_evidence":[{"product":{"name":"Cisco 2500 Series Wireless Controllers","slug":"cisco-2500-series-wireless-controllers","vendor":"Cisco"},"cve":{"id":"CVE-2018-0252"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product 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exposure.","kev":false,"epss":{"score":0.02483,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2018-05-02T16:00:00Z","updated_at":"2018-05-02T16:00:00Z","advisory_updated_at":"2018-05-02T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip"},"row_display_order":1},{"product":{"name":"Cisco 3500 Series Wireless Controllers","slug":"cisco-3500-series-wireless-controllers","vendor":"Cisco"},"cve":{"id":"CVE-2018-0252"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T05:29:42Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"8.5.105.0","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.02483,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2018-05-02T16:00:00Z","updated_at":"2018-05-02T16:00:00Z","advisory_updated_at":"2018-05-02T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip"},"row_display_order":2},{"product":{"name":"Cisco 5500 Series Wireless Controllers","slug":"cisco-5500-series-wireless-controllers","vendor":"Cisco"},"cve":{"id":"CVE-2018-0252"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T05:29:42Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"8.4.100.0","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.02483,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2018-05-02T16:00:00Z","updated_at":"2018-05-02T16:00:00Z","advisory_updated_at":"2018-05-02T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip"},"row_display_order":3}]}