#VU115010 Use of insufficiently random values in CoreDNS - CVE-2025-58063
Published: September 9, 2025
Vulnerability identifier: #VU115010
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-58063
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
CoreDNS
CoreDNS
Software vendor:
CoreDNS
CoreDNS
Description
The vulnerability allows a remote attacker to perform DNS cache poisoning attacks.
The vulnerability exists due to an error within the TTL() function in plugin/etcd/etcd.go, which casts the 64-bit etcd lease ID to a uint32 and uses it as the TTL, resulting in cache pinning for very long periods. A remote attacker can perform DNS cache poisoning attack.
Remediation
Install updates from vendor's website.