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CVE-2016-8864

37
FAUCET Score

CVE-2016-8864 is a denial-of-service vulnerability affecting ISC BIND 9.x versions prior to 9.9.9-P4, 9.10.x prior to 9.10.4-P4, and 9.11.x prior to 9.11.0-P1, as well as products from Debian, NetApp, and Red Hat. This high-severity vulnerability (CVSS 7.5) allows unauthenticated remote attackers to crash the BIND daemon by sending a specially crafted DNAME record in response to a recursive query. While the FAUCET Risk Score is high at 97/100, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.0.0, < 9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
>= 9.10.0, < 9.10.4CPE matchmatch criteria
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:-:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:beta1:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:beta2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
38.73%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3873 is in the 97th percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: bind-30:9.3.6-25.P1.el5_11.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: bind97-32:9.7.0-21.P2.el5_11.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: bind-32:9.8.2-0.47.rc1.el6_8.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 Advanced Update SupportFixed in: bind-32:9.7.3-8.P3.el6_2.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Advanced Update SupportFixed in: bind-32:9.8.2-0.17.rc1.el6_4.10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Advanced Update SupportFixed in: bind-32:9.8.2-0.23.rc1.el6_5.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.5 Telco Extended Update SupportFixed in: bind-32:9.8.2-0.23.rc1.el6_5.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.6 Advanced Update SupportFixed in: bind-32:9.8.2-0.30.rc1.el6_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.6 Telco Extended Update SupportFixed in: bind-32:9.8.2-0.30.rc1.el6_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.7 Extended Update SupportFixed in: bind-32:9.8.2-0.37.rc1.el6_7.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: bind-32:9.9.4-38.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Extended Update SupportFixed in: bind-32:9.9.4-29.el7_2.6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: bind

Vendor Advisories (1)

redhatCVE-2016-8864Important

bind: assertion failure while handling responses containing a DNAME answer

Nov 1, 2016

References

rhn.redhat.com / errata/RHSA-2016-2141.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2142.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2615.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2871.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1583
Third Party Advisory
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
kb.isc.org / article/AA-01434
Vendor Advisory
kb.isc.org / article/AA-01435
Broken Link
kb.isc.org / article/AA-01436
Broken Link
kb.isc.org / article/AA-01437
Broken Link
kb.isc.org / article/AA-01438
Broken Link
security.freebsd.org / advisories/FreeBSD-SA-16:34.bind.asc
Third Party Advisory
security.gentoo.org / glsa/201701-26
Third Party Advisory
security.netapp.com / advisory/ntap-20180926-0005
Third Party Advisory
debian.org / security/2016/dsa-3703
Third Party Advisory
securityfocus.com / bid/94067
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037156
Third Party AdvisoryVDB Entry