Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2003-0694 — sendmail / advanced_message_server

The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code via buffer overflow attacks, as demonstrated using the parseaddr function in parseaddr.c.

  • Published: Oct 6, 2003
  • Updated: Sep 13, 2026
  • CVE: CVE-2003-0694
  • Severity: High
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: High
  • Score: 10
  • AV:N/AC:L/Au:N/C:C/I:C/A:C

No CWE or OWASP classifications available.

Software Affected versions
sendmail / advanced_message_server = 1.2
sendmail / advanced_message_server = 1.3
sendmail / sendmail = 2.6
sendmail / sendmail = 2.6.1
sendmail / sendmail = 2.6.2
sendmail / sendmail = 3.0
sendmail / sendmail = 3.0.1
sendmail / sendmail = 3.0.2
sendmail / sendmail = 3.0.3
sendmail / sendmail = 8.8.8
sendmail / sendmail = 8.9.0
sendmail / sendmail = 8.9.1
sendmail / sendmail = 8.9.2
sendmail / sendmail = 8.9.3
sendmail / sendmail = 8.10
sendmail / sendmail = 8.10.1
sendmail / sendmail = 8.10.2
sendmail / sendmail = 8.11.0
sendmail / sendmail = 8.11.1
sendmail / sendmail = 8.11.2
sendmail / sendmail = 8.11.3
sendmail / sendmail = 8.11.4
sendmail / sendmail = 8.11.5
sendmail / sendmail = 8.11.6
sendmail / sendmail = 8.12-beta10
sendmail / sendmail = 8.12-beta12
sendmail / sendmail = 8.12-beta16
sendmail / sendmail = 8.12-beta5
sendmail / sendmail = 8.12-beta7
sendmail / sendmail = 8.12.0
sendmail / sendmail = 8.12.1
sendmail / sendmail = 8.12.2
sendmail / sendmail = 8.12.3
sendmail / sendmail = 8.12.4
sendmail / sendmail = 8.12.5
sendmail / sendmail = 8.12.6
sendmail / sendmail = 8.12.7
sendmail / sendmail = 8.12.8
sendmail / sendmail = 8.12.9
sendmail / sendmail_pro = 8.9.2
sendmail / sendmail_pro = 8.9.3
sendmail / sendmail_switch = 2.1
sendmail / sendmail_switch = 2.1.1
sendmail / sendmail_switch = 2.1.2
sendmail / sendmail_switch = 2.1.3
sendmail / sendmail_switch = 2.1.4
sendmail / sendmail_switch = 2.1.5
sendmail / sendmail_switch = 2.2
sendmail / sendmail_switch = 2.2.1
sendmail / sendmail_switch = 2.2.2
sendmail / sendmail_switch = 2.2.3
sendmail / sendmail_switch = 2.2.4
sendmail / sendmail_switch = 2.2.5
sendmail / sendmail_switch = 3.0
sendmail / sendmail_switch = 3.0.1
sendmail / sendmail_switch = 3.0.2
sendmail / sendmail_switch = 3.0.3
sgi / irix = 6.5.15
sgi / irix = 6.5.16
sgi / irix = 6.5.17f
sgi / irix = 6.5.17m
sgi / irix = 6.5.18f
sgi / irix = 6.5.18m
sgi / irix = 6.5.19f
sgi / irix = 6.5.19m
sgi / irix = 6.5.20f
sgi / irix = 6.5.20m
sgi / irix = 6.5.21f
sgi / irix = 6.5.21m
apple / mac_os_x = 10.2
apple / mac_os_x = 10.2.1
apple / mac_os_x = 10.2.2
apple / mac_os_x = 10.2.3
apple / mac_os_x = 10.2.4
apple / mac_os_x = 10.2.5
apple / mac_os_x = 10.2.6
apple / mac_os_x_server = 10.2
apple / mac_os_x_server = 10.2.1
apple / mac_os_x_server = 10.2.2
apple / mac_os_x_server = 10.2.3
apple / mac_os_x_server = 10.2.4
apple / mac_os_x_server = 10.2.5
apple / mac_os_x_server = 10.2.6
compaq / tru64 = 4.0f
compaq / tru64 = 4.0f_pk6_bl17
compaq / tru64 = 4.0f_pk7_bl18
compaq / tru64 = 4.0f_pk8_bl22
compaq / tru64 = 4.0g
compaq / tru64 = 4.0g_pk3_bl17
compaq / tru64 = 4.0g_pk4_bl22
compaq / tru64 = 5.1
compaq / tru64 = 5.1_pk3_bl17
compaq / tru64 = 5.1_pk4_bl18
compaq / tru64 = 5.1_pk5_bl19
compaq / tru64 = 5.1_pk6_bl20
compaq / tru64 = 5.1a
compaq / tru64 = 5.1a_pk1_bl1
compaq / tru64 = 5.1a_pk2_bl2
compaq / tru64 = 5.1a_pk3_bl3
compaq / tru64 = 5.1a_pk4_bl21
compaq / tru64 = 5.1a_pk5_bl23
compaq / tru64 = 5.1b
compaq / tru64 = 5.1b_pk1_bl1
compaq / tru64 = 5.1b_pk2_bl22
freebsd / freebsd = 3.0-releng
freebsd / freebsd = 4.0-releng
freebsd / freebsd = 4.3-release_p38
freebsd / freebsd = 4.3-releng
freebsd / freebsd = 4.4-release_p42
freebsd / freebsd = 4.4-releng
freebsd / freebsd = 4.5-release_p32
freebsd / freebsd = 4.5-releng
freebsd / freebsd = 4.6-release_p20
freebsd / freebsd = 4.6-releng
freebsd / freebsd = 4.7-release_p17
freebsd / freebsd = 4.7-releng
freebsd / freebsd = 4.8-release_p6
freebsd / freebsd = 4.8-releng
freebsd / freebsd = 4.9-pre-release
freebsd / freebsd = 5.0-release_p14
freebsd / freebsd = 5.0-releng
freebsd / freebsd = 5.1-release_p5
freebsd / freebsd = 5.1-releng
gentoo / linux = 0.5
gentoo / linux = 0.7
gentoo / linux = 1.1a
gentoo / linux = 1.2
gentoo / linux = 1.4-rc1
gentoo / linux = 1.4-rc2
gentoo / linux = 1.4-rc3
hp / hp-ux = 11.00
hp / hp-ux = 11.0.4
hp / hp-ux = 11.11
hp / hp-ux = 11.22
ibm / aix = 4.3.3
ibm / aix = 5.1
ibm / aix = 5.2
netbsd / netbsd = 1.4.3
netbsd / netbsd = 1.5
netbsd / netbsd = 1.5.1
netbsd / netbsd = 1.5.2
netbsd / netbsd = 1.5.3
netbsd / netbsd = 1.6
netbsd / netbsd = 1.6-beta
netbsd / netbsd = 1.6.1
sun / solaris = 2.6
sun / solaris = 7.0
sun / solaris = 8.0
sun / solaris = 9.0
sun / sunos = 5.7
sun / sunos = 5.8
turbolinux / turbolinux_advanced_server = 6.0
turbolinux / turbolinux_server = 6.1
turbolinux / turbolinux_server = 6.5
turbolinux / turbolinux_server = 7.0
turbolinux / turbolinux_server = 8.0
turbolinux / turbolinux_workstation = 6.0
turbolinux / turbolinux_workstation = 7.0
turbolinux / turbolinux_workstation = 8.0

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.