Resource exhaustion in CoreDNS - CVE-2025-47950

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Main Vulnerability Database Vulnerabilities #VU110250

Resource exhaustion in CoreDNS - CVE-2025-47950

Published: June 6, 2025


Vulnerability identifier: #VU110250
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-47950
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the DNS-over-QUIC (DoQ) server implementation in server_quic.go. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


Affected software

CoreDNS
Submariner
Netcool Operations Insight
openEuler
coredns
coredns-help
Storage Protect Server

How to mitigate CVE-2025-47950

Install updates from vendor's website.

CoreDNS - update to 1.12.2
Netcool Operations Insight - update to 1.6.15
coredns - addressed in versions 1.7.0-1.4, 1.7.0-1.6
coredns-help - addressed in versions 1.7.0-1.4, 1.7.0-1.6
Storage Protect Server - update to 8.1.27.100

External References

Related Security Bulletins