{"schema":"threatline.record/2","record":{"id":"CVE-2020-5135","aliases":[],"summary":"SonicWall SonicOS Buffer Overflow Vulnerability","details":"A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall.","categories":["Network & edge"],"product":"SonicOS","vendor":"SonicWall","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-5135","source_modified_at":"2025-10-21T23:35:35.728Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"SonicOS","vendor":"SonicWall","versions":[{"status":"affected","version":"SonicOS 6.5.4.7-79n and earlier"},{"status":"affected","version":"SonicOS 6.5.1.11-4n and earlier"},{"status":"affected","version":"SonicOS 6.0.5.3-93o and earlier"},{"status":"affected","version":"SonicOSv 6.5.4.4-44v-21-794 and earlier"},{"status":"affected","version":"SonicOS 7.0.0.0-1"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":true,"date_added":"2022-03-15","due_date":"2022-04-05","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Known"},"epss":{"probability":0.26869,"percentile":0.98038,"score_date":"2026-10-23"},"published_at":"2020-10-12T10:40:28.000Z","modified_at":"2025-10-21T23:35:35.728Z","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-2020-5135","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:35:35.728Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5135","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5135","source":"CISA KEV"},{"source":"CVE List","url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0010","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5135","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":"2025-02-06T19:55:08.576470Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:35:35.728Z","content_hash":"55da413bddbe2ba2d35327b2c95913927b7684a4a42c0434c089868f4843caa6"}}