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Fencer Vulns
medium 4.3

CVE-2006-7176 json

The version of Sendmail 8.13.1-2 on Red Hat Enterprise Linux 4 Update 4 and earlier does not reject the "localhost.localdomain" domain name…

published 2007-03-27 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-7158

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The version of Sendmail 8.13.1-2 on Red Hat Enterprise Linux 4 Update 4 and earlier does not reject the "localhost.localdomain" domain name for e-mail messages that come from external hosts, which might allow remote attackers to spoof messages.

Patch / fix

  • sendmail RHEL 5 8.13.8-8.el5
  • sendmail-cf RHEL 5 8.13.8-8.el5
  • sendmail RHEL 4 8.13.1-3.2.el4
  • sendmail-cf RHEL 4 8.13.1-3.2.el4

red hat advisories RHSA-2010:0237RHSA-2007:0252

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-7176 updated

sendmail allows external mail with from address xxx@localhost.localdomain

  • Red Hat Enterprise Linux (v. 5 server) sendmail 8.13.8-8.el5, sendmail-cf 8.13.8-8.el5
    fixed: vendor fix RHSA-2010:0237
  • Red Hat Enterprise Linux AS version 4 sendmail 8.13.1-3.2.el4, sendmail-cf 8.13.1-3.2.el4
    fixed: vendor fix RHSA-2007:0252
  • Red Hat Enterprise Linux Desktop (v. 5 client) sendmail 8.13.8-8.el5, sendmail-cf 8.13.8-8.el5
    fixed: vendor fix RHSA-2010:0237
  • Red Hat Enterprise Linux Desktop version 4 sendmail 8.13.1-3.2.el4, sendmail-cf 8.13.1-3.2.el4
    fixed: vendor fix RHSA-2007:0252
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) sendmail 8.13.8-8.el5, sendmail-cf 8.13.8-8.el5
    fixed: vendor fix RHSA-2010:0237
  • Red Hat Enterprise Linux ES version 4 sendmail 8.13.1-3.2.el4, sendmail-cf 8.13.1-3.2.el4 Red Hat Enterprise Linux WS version 4 sendmail 8.13.1-3.2.el4, sendmail-cf 8.13.1-3.2.el4
    fixed: vendor fix RHSA-2007:0252

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.07% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.