CVEvulnerability

CVE-2010-4344

9.8 CRITICAL Known exploited Published 2010-12-14 Modified 2026-06-16 Official page ↗

CISA Known Exploited Vulnerability

Exim Heap-Based Buffer Overflow Vulnerability — Exim Exim

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.

Added to KEV
2022-03-25
Remediation due
2022-04-15
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2010-4344
Status
Analyzed
Published
2010-12-14
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-787

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.

Affected configurations

• exim exim (< 4.70) • opensuse opensuse 11.1 • opensuse opensuse 11.2 • opensuse opensuse 11.3 • debian debian linux 5.0 • canonical ubuntu linux 6.06 • canonical ubuntu linux 8.04 • canonical ubuntu linux 9.10

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References