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CVE-2014-7844

20
FAUCET Score

CVE-2014-7844 describes a critical vulnerability in BSD mailx 8.1.2 and earlier, affecting distributions like Debian and Red Hat. This flaw allows remote attackers to execute arbitrary commands by crafting a malicious email address. With a CVSS score of 7.8 (High), it presents a significant risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) is readily available and it's not on the KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness despite its inactive status on the Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 95th percentile among its peer group of 16,994 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: mailx-0:12.4-8.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: mailx-0:12.5-12.el7_0
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: mailx

Vendor Advisories (1)

redhatCVE-2014-7844Moderate

mailx: command execution flaw

Dec 16, 2014

References

linux.oracle.com / errata/ELSA-2014-1999.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2014-1999.html
Third Party Advisory
seclists.org / oss-sec/2014/q4/1066
Mailing ListPatchThird Party Advisory
debian.org / security/2014/dsa-3104
Third Party Advisory
debian.org / security/2014/dsa-3105
Third Party Advisory