CVE-2016-0747

Name: CVE-2016-0747
Creator: NVD / NIST
Published: 2016-02-15T19:59:02.123+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 8.43%

Last modified Jun 17, 2026

CVE-2016-0747 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.. EPSS estimates a 8.43% chance of exploitation in the next 30 days.

Description

The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

8.43%

94.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
F5	Nginx	>= 0.6.18, < 1.8.1
F5	Nginx	>= 1.9.0, < 1.9.10
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Opensuse	Leap	42.1
Apple	Xcode	< 13.0

References

http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.htmlMailing List, Third Party Advisory
http://mailman.nginx.org/pipermail/nginx/2016-January/049700.htmlVendor Advisory
http://seclists.org/fulldisclosure/2021/Sep/36Mailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3473Third Party Advisory
http://www.securitytracker.com/id/1034869Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2892-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1425Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa115Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1302589Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/201606-06Third Party Advisory
https://support.apple.com/kb/HT212818Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-02/msg00042.htmlMailing List, Third Party Advisory
http://mailman.nginx.org/pipermail/nginx/2016-January/049700.htmlVendor Advisory
http://seclists.org/fulldisclosure/2021/Sep/36Mailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3473Third Party Advisory
http://www.securitytracker.com/id/1034869Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2892-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1425Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa115Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1302589Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/201606-06Third Party Advisory
https://support.apple.com/kb/HT212818Third Party Advisory

Timeline

Published: Feb 15, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-0747?

How severe is CVE-2016-0747?

CVE-2016-0747 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 8.43% probability of exploitation in the next 30 days.

How do I fix CVE-2016-0747?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-0747?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST