{"cve_id":"CVE-2010-4344","published":"2010-12-14T16:00:04.163000+00:00","last_modified":"2026-06-16T23:24:36.107000+00:00","vuln_status":"Analyzed","description":"Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging.","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-787"],"in_kev":true,"kev_date_added":"2022-03-25","kev_ransomware":false,"epss_score":0.71706,"epss_percentile":0.99422,"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":"2026-09-18T07:57:46.381838+00:00","first_seen":"2010-12-14T16:00:04.163000+00:00","kev_first_seen":"2022-03-25T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["canonical","debian","exim","opensuse"],"products":["debian_linux","exim","opensuse","ubuntu_linux"],"affected":[{"vendor":"canonical","product":"ubuntu_linux","ranges":["6.06","9.10","8.04"]},{"vendor":"debian","product":"debian_linux","ranges":["5.0"]},{"vendor":"exim","product":"exim","ranges":["< 4.70"]},{"vendor":"opensuse","product":"opensuse","ranges":["11.3","11.2","11.1"]}]}