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CVE-2014-3956

11
FAUCET Score

CVE-2014-3956 describes a flaw in the sm_close_on_exec function of Sendmail before version 8.14.9, where incorrect argument order prevents proper FD_CLOEXEC flag setting, potentially allowing local users to access high-numbered file descriptors through custom mail-delivery programs. This vulnerability, affecting products like Fedora, FreeBSD, and HP, has a low CVSS score of 1.9 (AV:L/AC:M/Au:N/C:P/I:N/A:N), indicating local access, medium attack complexity, and a potential impact of information disclosure. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not a widely targeted or discussed vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:*:-:*:*:*:*:*:*
<= b.11.31CPE matchmatch criteria
cpe:2.3:a:hp:hpux:*:*:*:*:*:*:*:*
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
<= 8.14.8CPE matchmatch criteria
cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:*
8.6.7CPE matchmatch criteria
cpe:2.3:a:sendmail:sendmail:8.6.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 91st percentile among its peer group of 747 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (4)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: sendmail
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: sendmail
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: sendmail
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: sendmail

Vendor Advisories (1)

redhatCVE-2014-3956Low

sendmail: Properly set the close-on-exec flag for file descriptors

May 21, 2014

References

ftp.sendmail.org / pub/sendmail/RELEASE_NOTES
Vendor Advisory
advisories.mageia.org / MGASA-2014-0270.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-June/134349.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2014-06/msg00032.html
lists.opensuse.org / opensuse-updates/2014-06/msg00033.html
packetstormsecurity.com / files/126975/Slackware-Security-Advisory-sendmail-Updates.html
Third Party AdvisoryVDB Entry
secunia.com / advisories/57455
secunia.com / advisories/58628
security.gentoo.org / glsa/glsa-201412-32.xml
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
freebsd.org / security/advisories/FreeBSD-SA-14%3A11.sendmail.asc
mandriva.com / security/advisories
mandriva.com / security/advisories
securityfocus.com / bid/67791
Third Party AdvisoryVDB Entry
securitytracker.com / id/1030331
Third Party AdvisoryVDB Entry
sendmail.com / sm/open_source/download/8.14.9
PatchVendor Advisory
slackware.com / security/viewer.php