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CVE-2025-68151

25
FAUCET Score

CVE-2025-68151 is a resource exhaustion vulnerability affecting CoreDNS versions prior to 1.14.0, specifically impacting its gRPC, HTTPS, and HTTP/3 server implementations. An unauthenticated remote attacker can degrade or crash the server by initiating numerous concurrent connections, streams, or sending excessively large request bodies, leading to memory exhaustion. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high availability impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.14.0CPE matchmatch criteria
cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.6MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
UNREPORTED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 13th percentile among its peer group of 51,553 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 (9)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/coredns/corednsFixed in: 1.14.0
microsoftpatch availablevia msrc
Product: 20915-17086Fixed in: 1.11.1-25
microsoftpatch availablevia msrc
Product: azl3 coredns 1.11.4-13 on Azure Linux 3.0Fixed in: 1.11.4-13
microsoftpatch availablevia msrc
Product: cbl2 coredns 1.11.1-25 on CBL Mariner 2.0Fixed in: 1.11.1-25
microsoftpatch availablevia msrc
Product: 20914-17084Fixed in: 1.11.4-13
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: rhacm2/lighthouse-coredns-rhel9
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-coredns-rhel9
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: rhacm2/lighthouse-agent-rhel9

Vendor Advisories (3)

microsoft2026-Jan/CVE-2025-68151Moderate

CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages

Jan 13, 2026
goGHSA-527x-5wrf-22m2medium

CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages

Jan 8, 2026
redhatCVE-2025-68151Moderate

github.com/coredns/coredns/core/dnsserver: CoreDNS DoS via unbounded connections and oversized messages

Jan 8, 2026

References

github.com / coredns/coredns/commit/0d8cbb1a6bcb6bc9c1a489865278b8725fa20812
Patch
github.com / coredns/coredns/pull/7490
Issue TrackingPatch
github.com / coredns/coredns/security/advisories/GHSA-527x-5wrf-22m2
Third Party Advisory