VULNERABILITY INTELLIGENCE

CVE-2010-4344

CVSS score9.8 CRITICAL
EPSS probability71.71%
CISA KEVKnown exploited vulnerability
Published2010-12-14
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Exim Heap-Based Buffer Overflow Vulnerability

Vendor / product: Exim / Exim

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.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references