{"cve_id":"CVE-2020-5135","published":"2020-10-12T11:15:12.747000+00:00","last_modified":"2026-06-17T03:20:57.470000+00:00","vuln_status":"Analyzed","description":"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. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-120"],"in_kev":true,"kev_date_added":"2022-03-15","kev_ransomware":true,"epss_score":0.26869,"epss_percentile":0.98036,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T09:26:01.594530+00:00","first_seen":"2020-10-12T11:15:12.747000+00:00","kev_first_seen":"2022-03-15T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["sonicwall"],"products":["sonicos","sonicosv"],"affected":[{"vendor":"sonicwall","product":"sonicos","ranges":["≤ 6.0.5.3","≥ 6.5.0.0 and ≤ 6.5.1.11","≥ 6.5.4.0 and ≤ 6.5.4.7","7.0.0.0"]},{"vendor":"sonicwall","product":"sonicosv","ranges":["≤ 6.5.4.4"]}]}