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CVE-2017-15133

25
FAUCET Score

CVE-2017-15133 is a denial-of-service vulnerability affecting miekg-dns versions prior to 1.0.4. A remote attacker can exploit this flaw by sending precisely timed TCP packets, causing the DNS server to cease accepting new connections. This vulnerability is rated as HIGH severity (CVSS 7.5), requiring no user interaction or authentication, and leading to a complete loss of availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, organizations using affected versions should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.4CPE matchmatch criteria
cpe:2.3:a:miekg-dns_prject:miekg-dns:*:*:*:*:*:*:*:*

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
1.85%
Probability of exploitation in next 30 days
EPSS Percentile
76.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0185 is in the 60th percentile among its peer group of 51,485 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

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 (2)

gopatch availablevia ghsa
Product: github.com/miekg/dnsFixed in: 1.0.4
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Enterprise 3Fixed in: miekg-dns

Vendor Advisories (2)

goGHSA-p55x-7x9v-q8m4high

Denial of Service in miekg-dns

Jun 29, 2021
redhatCVE-2017-15133Moderate

miekg-dns: Denial of service via TCP serving code

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / miekg/dns/issues/627
Issue TrackingThird Party Advisory