CVE-2010-4344

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.

  • Published Dec 14, 2010
  • CVSS 9.8 critical
  • 71.7% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog
  • A Metasploit module exploits it
  • A fix is available

CVE-2010-4344 at the National Vulnerability Database