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CVE-2018-5734

28
FAUCET Score

CVE-2018-5734 describes a vulnerability in BIND versions 9.10.5-S1 through 9.10.5-S4 and 9.10.6-S1 through 9.10.6-S2, as well as several NetApp products utilizing BIND. A specially crafted malformed packet can cause BIND to incorrectly select a SERVFAIL rcode, leading to an assertion failure and denial of service if the SERVFAIL cache feature is enabled. This vulnerability has a CVSSv3 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.10.5CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.10.5:s1:*:*:*:*:*:*
9.10.5CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.10.5:s4:*:*:*:*:*:*
9.10.6CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.10.6:s1:*:*:*:*:*:*
9.10.6CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.10.6:s2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*

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
6.24%
Probability of exploitation in next 30 days
EPSS Percentile
92.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0624 is in the 88th percentile among its peer group of 51,466 CVEs.

Social Chatter

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

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

Remediation

Vendor Advisories (1)

redhatCVE-2018-5734Important

bind: A malformed request can trigger an assertion failure in badcache.c

Feb 28, 2018

References

kb.isc.org / docs/aa-01562
Vendor Advisory
security.netapp.com / advisory/ntap-20180926-0005
Third Party Advisory
securityfocus.com / bid/103189
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040438
Third Party AdvisoryVDB Entry