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Vulnerability record · CVE-2004-2771 · published 24 December 2014

CVE-2004-2771: Oracle linux improper input validation vulnerability

Oracle · Linux

The expand function in fio.c in Heirloom mailx 12.5 and earlier and BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an email address.

7.5 CVSS 2.0 High EPSS 6.9% · top 6.2% CWE-20 · Improper input validation
7.5CVSS 2.0 base score
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
16References, 2 tagged exploit
23 Sep 2026Last modified by NVD

Description

The expand function in fio.c in Heirloom mailx 12.5 and earlier and BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an email address.

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

Affected products

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

References

LinkTags
http://linux.oracle.com/errata/ELSA-2014-1999.html
http://rhn.redhat.com/errata/RHSA-2014-1999.html
http://seclists.org/oss-sec/2014/q4/1066
http://secunia.com/advisories/60940
http://secunia.com/advisories/61585
http://secunia.com/advisories/61693
http://www.debian.org/security/2014/dsa-3105
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=278748 Exploit
http://linux.oracle.com/errata/ELSA-2014-1999.html
http://rhn.redhat.com/errata/RHSA-2014-1999.html
http://seclists.org/oss-sec/2014/q4/1066
http://secunia.com/advisories/60940
http://secunia.com/advisories/61585
http://secunia.com/advisories/61693
http://www.debian.org/security/2014/dsa-3105
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=278748 Exploit

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

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Source: NIST National Vulnerability Database (record CVE-2004-2771), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.