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Vulnerabilities

Vulnerability · CVE-2025-47950

CoreDNS is a DNS server that chains plugins.

Published Jun 6, 2025 · catalog updated Jun 6, 2025 · CoreDNS is a DNS

Check if you run it

No confirmed exploitation is on record for CVE-2025-47950. EPSS is 1.19%. Act only if a listed version of CoreDNS is a DNS is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (CoreDNS is a DNS).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.19%
Remediation
Version ranges on file
Affected products
vendor coredns coredns < 1.12.2

CoreDNS is a DNS server that chains plugins. In versions prior to 1.12.2, a Denial of Service (DoS) vulnerability exists in the CoreDNS DNS-over-QUIC (DoQ) server implementation. The server previously created a new goroutine for every incoming QUIC stream without imposing any limits on the number of concurrent streams or goroutines. A remote, unauthenticated attacker could open a large number of streams, leading to uncontrolled memory consumption and eventually causing an Out Of Memory (OOM) crash — especially in containerized or memory-constrained environments. The patch in version 1.12.2 int

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor coredns coredns < 1.12.2< 1.12.2

How to fix CVE-2025-47950

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-47950. EPSS is 1.19%. Act only if a listed version of CoreDNS is a DNS is installed.

Which versions are affected?

Compare what you have installed with coredns coredns < 1.12.2 < 1.12.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.19%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 6, 2025 · EUVD

    Detected

    CoreDNS is a DNS server that chains plugins. In versions prior to 1.12.2, a Denial of Service (DoS) vulnerability exists in the CoreDNS DNS-over-QUIC (DoQ) server implementation. The server previously created a new goroutine for every incoming QUIC stream without imposing any limits on the number of concurrent streams or goroutines. A remote, unauthenticated attacker could open a large number of s

  2. Jun 6, 2025 · EUVD

    Updated

    CoreDNS is a DNS server that chains plugins. In versions prior to 1.12.2, a Denial of Service (DoS) vulnerability exists in the CoreDNS DNS-over-QUIC (DoQ) server implementation. The server previously created a new goroutine for every incoming QUIC stream without imposing any limits on the number of concurrent streams or goroutines. A remote, unauthenticated attacker could open a large number of s

Sources

  • CVE.orgVulnerability recordCVE-2025-47950

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-47950

    30-day exploitation probability 1.2%

    first.org
  • EUVDVulnerability recordEUVD-2025-17359

    CoreDNS is a DNS server that chains plugins. In versions prior to 1.12.2, a Denial of Service (DoS) vulnerability exists in the CoreDNS DNS-over-QUIC (DoQ) server implementation. The server previously created a new goroutine for every incoming QUIC stream without imposing any lim

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.