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Fencer Intel
high 7.8

CVE-2014-7844 json

BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via a crafted email address.

published 2020-01-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2014-7698

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via a crafted email address.

Patch / fix

  • bsd-mailx Debian 14, Debian 13, Debian 12 8.1.2-0.20141216cvs-1

debian advisories DEBIAN-CVE-2014-7844

  • bsd-mailx Ubuntu 14.04 LTS 8.1.2-0.20131005cvs-1ubuntu0.14.04.1
  • heirloom-mailx Ubuntu 14.04 LTS 12.5-2+deb7u1build0.14.04.1

ubuntu advisories UBUNTU-CVE-2014-7844

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mailx RHEL 6 12.4-8.el6_6
  • mailx RHEL 7 12.5-12.el7_0

red hat advisories RHSA-2014:1999

  • mailx openSUSE Tumbleweed 12.5-24.4

opensuse advisories openSUSE-SU-2024:10561-1

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-2014-7844 updated cvss 3.6

mailx: command execution flaw

  • Red Hat Enterprise Linux 5 mailx
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) mailx 12.5-12.el7_0 Red Hat Enterprise Linux ComputeNode (v. 7) mailx 12.5-12.el7_0 Red Hat Enterprise Linux Desktop (v. 6) mailx 12.4-8.el6_6 Red Hat Enterprise Linux HPC Node (v. 6) mailx 12.4-8.el6_6 Red Hat Enterprise Linux Server (v. 6) mailx 12.4-8.el6_6 Red Hat Enterprise Linux Server (v. 7) mailx 12.5-12.el7_0
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) mailx 12.4-8.el6_6 Red Hat Enterprise Linux Workstation (v. 7) mailx 12.5-12.el7_0
    fixed: vendor fix RHSA-2014:1999

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

1.55% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • BSD mailx

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Intel 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.