Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-0747

18
FAUCET Score

CVE-2016-0747 is a denial-of-service vulnerability affecting the resolver in nginx versions prior to 1.8.1 and 1.9.10, as well as products from Apple, Canonical, Debian, F5, and openSUSE. Attackers can exploit this flaw remotely without authentication by sending crafted CNAME resolution requests, leading to excessive worker process resource consumption. While rated Medium severity (CVSS 5.3), there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.6.18, < 1.8.1CPE matchmatch criteria
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
>= 1.9.0, < 1.9.10CPE matchmatch criteria
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.43%
Probability of exploitation in next 30 days
EPSS Percentile
94.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0843 is in the 93rd percentile among its peer group of 23,701 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, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

Patch Available

Vendor Patches (16)

netgearpatch availablevia llm_extracted
Fixed in: 1.9.10+, 1.8.1+
opensshpatch availablevia llm_extracted
Fixed in: 1.9.10
View patch
power_bipatch availablevia llm_extracted
Fixed in: 1.8.1
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUSFixed in: rh-nginx18-nginx-1:1.8.1-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-nginx18-nginx-1:1.8.1-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUSFixed in: rh-nginx18-nginx-1:1.8.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSFixed in: rh-nginx18-nginx-1:1.8.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nginx18-nginx-1:1.8.1-1.el7
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-nginx18-nginx-1:1.8.1-1.el6
View patch
terraformpatch availablevia llm_extracted
Fixed in: 1.9.10
dahuavendor investigatingvia llm_extracted
Fixed in: 1.8.1+
dfinityvendor investigatingvia llm_extracted
Fixed in: 1.9.10
jfrogvendor investigatingvia llm_extracted
Fixed in: 1.9.10
liferayvendor investigatingvia llm_extracted
Fixed in: 1.8.1
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: nginx16-nginx

Vendor Advisories (9)

redhatCVE-2016-0747Moderate

nginx: Insufficient limits of CNAME resolution in resolver

Jan 26, 2016
opensshllm-openssh-dc00524623c3e681MEDIUM

Insufficient limits of CNAME resolution in resolver

Jan 1, 2016
dfinityllm-dfinity-1e4b1be2f5bdf2caMEDIUM

Insufficient limits of CNAME resolution in resolver

Jan 1, 2016
power_billm-power_bi-c04106e96000b24fMEDIUM

Insufficient limits of CNAME resolution in resolver

Jan 1, 2016
liferayllm-liferay-e8564d16086733c7MEDIUM

Insufficient limits of CNAME resolution in resolver

Jan 1, 2016
jfrogllm-jfrog-b7d7c592b9d1901fMEDIUM

Insufficient limits of CNAME resolution in resolver

Jan 1, 2016
dahuallm-dahua-3213d9cea258d478MEDIUM

Insufficient limits of CNAME resolution in resolver

terraformllm-terraform-255a5cb06c930a50MEDIUM

Insufficient limits of CNAME resolution in resolver

netgearllm-netgear-74a952bf3ff8d659MEDIUM

Insufficient limits of CNAME resolution in resolver

References

lists.opensuse.org / opensuse-updates/2016-02/msg00042.html
Mailing ListThird Party Advisory
mailman.nginx.org / pipermail/nginx/2016-January/049700.html
Vendor Advisory
access.redhat.com / errata/RHSA-2016:1425
Third Party Advisory
bto.bluecoat.com / security-advisory/sa115
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
seclists.org / fulldisclosure/2021/Sep/36
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201606-06
Third Party Advisory
support.apple.com / kb/HT212818
Third Party Advisory
debian.org / security/2016/dsa-3473
Third Party Advisory
securitytracker.com / id/1034869
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2892-1
Third Party Advisory