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Vulnerability record · CVE-1999-1109 · published 22 December 1999

CVE-1999-1109: Sendmail vulnerability

Sendmail · Sendmail

Sendmail before 8.10.0 allows remote attackers to cause a denial of service by sending a series of ETRN commands then disconnecting from the server, while Sendmail continues to process the commands after the connection has been terminated.

5.0 CVSS 2.0 Medium EPSS 7.2% · top 5.9%
5.0CVSS 2.0 base score
7.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

Sendmail before 8.10.0 allows remote attackers to cause a denial of service by sending a series of ETRN commands then disconnecting from the server, while Sendmail continues to process the commands after the connection has been terminated.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=94632241202626&w=2
http://marc.info/?l=bugtraq&m=94780566911948&w=2
http://www.iss.net/security_center/static/7760.php
http://www.securityfocus.com/bid/904
http://marc.info/?l=bugtraq&m=94632241202626&w=2
http://marc.info/?l=bugtraq&m=94780566911948&w=2
http://www.iss.net/security_center/static/7760.php
http://www.securityfocus.com/bid/904

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2003-0694Sendmail prescan buffer overflow allows remote code executionThe prescan function in Sendmail 8.12.9 contains a buffer overflow reachable through crafted email addresses, as demonstrated via the parseaddr funct…EPSS 66%analysed10.0CVE-2003-0161Sendmail vulnerabilityThe prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int t…EPSS 39%10.0CVE-2002-1337Sendmail crackaddr buffer overflow allows remote code executionSendmail versions 5.79 through 8.12.7 contain a buffer overflow in the crackaddr function in headers.c, triggered by specially formatted sender and r…EPSS 73%analysed7.8CVE-2007-2246Sendmail vulnerabilityUnspecified vulnerability in HP-UX B.11.00 and B.11.11, when running sendmail 8.9.3 or 8.11.1; and HP-UX B.11.23 when running sendmail 8.11.1; allows…EPSS 2.3%7.6CVE-2006-0058Sendmail vulnerabilitySignal handler race condition in Sendmail 8.13.x before 8.13.6 allows remote attackers to execute arbitrary code by triggering timeouts in a way that…EPSS 29%7.5CVE-2009-4565Sendmail vulnerabilitysendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-mid…EPSS 2.4%7.5CVE-2006-7175Sendmail vulnerabilityThe version of Sendmail 8.13.1-2 on Red Hat Enterprise Linux 4 Update 4 and earlier does not allow the administrator to disable SSLv2 encryption, whi…EPSS 0.82%7.5CVE-2006-4434Sendmail use after free vulnerabilityUse-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long "header line", which c…EPSS 4.5%

Source: NIST National Vulnerability Database (record CVE-1999-1109), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.