CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.
CVE-2025-68151
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 56% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 33.7%
- KEV
- Not listed
Published
January 8, 2026
Last Modified
January 22, 2026
References (3)
- security-advisories@githubhttps://github.com/coredns/coredns/commit/0d8cbb1a6bcb6bc9c1a489865278b8725fa20812
- security-advisories@githubhttps://github.com/coredns/coredns/pull/7490
- security-advisories@githubhttps://github.com/coredns/coredns/security/advisories/GHSA-527x-5wrf-22m2
Vendor Advisories for CVE-2025-68151(4)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:36873Red Hat Product SecurityHigh
Red Hat Security Advisory: Submariner v0.20 security fixes and container updates
- RHSA-2026:25127Red Hat Product SecurityHigh
Red Hat Security Advisory: Submariner v0.21 security fixes and container updates
- CVE-2025-68151Microsoft Security Response Center (MSRC)Medium
CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages
- RHSA-2026:8151Red Hat Product SecurityHigh
Red Hat Security Advisory: Submariner v0.22 security fixes and container updates
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | rhacm2/lighthouse-coredns-rhel9:1774086225 | 2026-04-14 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/coredns/coredns | — | 1.14.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-07-06 06:02 UTCOSV refresh
- 2026-07-06 02:23 UTCEPSS rescore
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- 2026-06-17 17:44 UTCOSV refresh
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- 2026-05-29 16:28 UTCEG score recompute
- 2026-05-29 16:28 UTCVendor advisory
- 2026-05-29 13:44 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat · msrc
Same CWE
10 shownCWE-770
Frequently asked(5)
What is CVE-2025-68151?
When was CVE-2025-68151 disclosed?
Is CVE-2025-68151 actively exploited?
What is the CVSS score of CVE-2025-68151?
How do I remediate CVE-2025-68151?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-68151
Is Your Infrastructure Affected by CVE-2025-68151?
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