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CVE-2016-9778

18
FAUCET Score

CVE-2016-9778 is a medium-severity denial-of-service vulnerability affecting specific versions of ISC BIND, NetApp BIND, and related products when using the "nxdomain-redirect" feature. An attacker can trigger an assertion failure by sending a specially crafted query to a vulnerable server configured to authoritatively serve a zone while also using nxdomain-redirect for that same zone. This can lead to a server crash, resulting in high impact to availability. While the attack complexity is high, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, though it has received some media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.9.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.8:s1:*:*:*:*:*:*
9.9.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.8:s2:*:*:*:*:*:*
9.9.8CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.8:s3:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:s1:*:*:*:*:*:*
9.9.9CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.9.9:s6:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
6.79%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0679 is in the 92nd percentile among its peer group of 19,954 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

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

Remediation

Vendor Advisories (1)

redhatCVE-2016-9778Important

bind: assertion failure while handling certain queries using the nxdomain-redirect feature

Jan 11, 2017

References

kb.isc.org / article/AA-01442
Vendor Advisory
security.gentoo.org / glsa/201708-01
Third Party Advisory
security.netapp.com / advisory/ntap-20180926-0005
Third Party Advisory
securityfocus.com / bid/95388
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037582
Third Party AdvisoryVDB Entry