CVE-2025-8677

Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion. This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

11% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-25)

CWE

CWE-405

Published

2025-10-22

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

References

• https://kb.isc.org/docs/cve-2025-8677
• http://www.openwall.com/lists/oss-security/2025/10/22/1

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