CVE-2025-58063
HIGH EPSS 32.5%
Published Sep 9, 20259mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
Published Sep 9, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
Description
CoreDNS is a DNS server that chains plugins. Starting in version 1.2.0 and prior to version 1.12.4, the CoreDNS etcd plugin contains a TTL confusion vulnerability where lease IDs are incorrectly used as TTL values, enabling DNS cache pinning attacks. This effectively creates a DoS condition for DNS resolution of affected services. The `TTL()` function in `plugin/etcd/etcd.go` incorrectly casts etcd lease IDs (64-bit integers) to uint32 and uses them as TTL values. Large lease IDs become very large TTLs when cast to uint32. This enables cache pinning attacks. Version 1.12.4 contains a fix for the issue.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability High
Threat Intelligence
EPSS Exploit Probability
32.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-681
References 2
- github.com https://github.com/coredns/coredns/commit/e1768a5d272e9da649dfb8588595e5c6e4e640bf
- github.com https://github.com/coredns/coredns/security/advisories/GHSA-93mf-426m-g6x9
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.