Allocation of resources without limits or throttling in CoreDNS - CVE-2025-68151
Published: January 8, 2026
Vulnerability identifier: #VU121092
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-2025-68151
CWE-ID: CWE-770
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 in gRPC, HTTPS, and HTTP/3 implementations. A remote attacker can initiate multiple connections with the services to trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
CoreDNS
openEuler
coredns
coredns-help
openEuler
coredns
coredns-help
How to mitigate CVE-2025-68151
Install updates from vendor's website.
CoreDNS - update to 1.14.0
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
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