{"schema":"threatline.record/2","record":{"id":"CVE-2016-4437","aliases":[],"summary":"Apache Shiro Code Execution Vulnerability","details":"Apache Shiro contains a vulnerability which may allow remote attackers to execute code or bypass intended access restrictions via an unspecified request parameter when a cipher key has not been configured for the \"remember me\" feature.","categories":["Unclassified"],"product":"Shiro","vendor":"Apache","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2016-4437","source_modified_at":"2025-10-21T23:55:51.717Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":true,"date_added":"2021-11-03","due_date":"2022-05-03","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.93039,"percentile":0.99836,"score_date":"2026-10-23"},"published_at":"2016-06-07T14:00:00.000Z","modified_at":"2025-10-21T23:55:51.717Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2016-4437","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:55:51.717Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/shiro_rememberme_v124_deserialize.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2016-06-07"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/48410","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2020-05-01"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2016/CVE-2016-4437.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2016-4437","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Exploit-DB","Nuclei","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-4437","source":"CISA KEV"},{"source":"CVE List","url":"https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4437","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2025-02-07T13:29:14.189192Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"Apache Shiro v1.2.4 Cookie RememberME Deserial RCE","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/shiro_rememberme_v124_deserialize.rb","date":"2016-06-07","added":"2026-05-05","check":false},{"source":"Exploit-DB","kind":"Remote exploit","name":"Apache Shiro 1.2.4 - Cookie RememberME Deserial RCE (Metasploit)","url":"https://www.exploit-db.com/exploits/48410","date":"2020-05-01","added":"2020-05-01","verified":true},{"source":"Nuclei","kind":"Scanner template","name":"Apache Shiro 1.2.4 Cookie RememberME - Deserial Remote Code Execution Vulnerability","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2016/CVE-2016-4437.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2025-10-21T23:55:51.717Z","content_hash":"dd85141aca83374fa586003586fb29340402382aec574e0b713894bbb3958b98"}}