{"schema":"threatline.record/2","record":{"id":"CVE-2019-18935","aliases":[],"summary":"Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability","details":"Progress Telerik UI for ASP.NET AJAX contains a deserialization of untrusted data vulnerability through RadAsyncUpload which leads to code execution on the server in the context of the w3wp.exe process.","categories":["Frameworks"],"product":"Telerik UI for ASP.NET AJAX","vendor":"Progress","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-18935","source_modified_at":"2025-10-21T23:35:56.289Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"n/a","vendor":"n/a","versions":[{"version":"n/a","status":"affected"}],"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":"Known"},"epss":{"probability":0.99737,"percentile":0.99954,"score_date":"2026-10-23"},"published_at":"2019-12-11T00:00:00.000Z","modified_at":"2025-10-21T23:35:56.289Z","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-2019-18935","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:35:56.289Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/telerik_rau_deserialization.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2019-12-09"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/47793","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2019-12-18"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-18935","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Exploit-DB","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18935","source":"CISA KEV"},{"source":"CVE List","url":"https://www.telerik.com/support/whats-new/release-history","tags":["x_transferred"]},{"source":"CVE List","url":"https://codewhitesec.blogspot.com/2019/02/telerik-revisited.html","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.telerik.com/support/kb/aspnet-ajax/details/allows-javascriptserializer-deserialization","tags":["x_transferred"]},{"source":"CVE List","url":"https://github.com/bao7uo/RAU_crypto","tags":["x_transferred"]},{"source":"CVE List","url":"https://know.bishopfox.com/research/cve-2019-18935-remote-code-execution-in-telerik-ui","tags":["x_transferred"]},{"source":"CVE List","url":"https://github.com/noperator/CVE-2019-18935","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.telerik.com/support/whats-new/aspnet-ajax/release-history/ui-for-asp-net-ajax-r1-2020-%28version-2020-1-114%29","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.bleepingcomputer.com/news/security/us-federal-agency-hacked-using-old-telerik-bug-to-steal-data/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18935","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":"2025-02-04T20:02:54.779183Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"Telerik UI ASP.NET AJAX RadAsyncUpload Deserialization","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/telerik_rau_deserialization.rb","date":"2019-12-09","added":"2026-04-22","check":true},{"source":"Exploit-DB","kind":"Webapps exploit","name":"Telerik UI - Remote Code Execution via Insecure Deserialization","url":"https://www.exploit-db.com/exploits/47793","date":"2019-12-18","added":"2019-12-18","verified":false}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:35:56.289Z","content_hash":"350d92d07a096aea69b01c525d0581389075fa0765144e30c94c96095e191a07"}}