CVE-2010-4344

9.8

CVSS
Critical

PUBLISHED

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...

Exploited in the wild Remote Low complexity No user interaction

Vendor: Exim
Product: Exim
Published: Dec 14, 2010
EPSS: —

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.

cisa metasploit

CVSS scores

CVSS v3.1 9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 9.3

AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitation status

Exploited in the wild

Recorded 2022-03-25 00:00:00 UTC · Source

SSVC decision points

Exploitation: active
Automatable: Yes
Technical impact: total

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source	Added
CISA	Mar 25, 2022

Scanner integrations

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/smtp/exim4_string_format.rb	Apr 28, 2025

Vulnerability detail