{"id":"CVE-2010-4344","aliases":["DEBIAN-CVE-2010-4344","DSA-2131-1","EUVD-2010-4313","GHSA-mvgg-qcrq-7wr8","RHSA-2010:0970","openSUSE-SU-2024:10017-1"],"status":"published","title":"Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows...","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.71706,"percentile":0.99426,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":true},"cwes":["CWE-119","CWE-787"],"published":"2010-12-10T00:00:00Z","modified":"2026-10-23T18:02:43Z","kev":{"date_added":"2022-03-25","due_date":"2022-04-15","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2022-03-25"},{"source":"kev","since":"2022-03-25"}],"exploits":[{"source":"metasploit","id":"exploit/unix/smtp/exim4_string_format","title":"Exim4 string_format Function Heap Buffer 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