CVE-2025-8677 | THREATINT

Description

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.

PUBLISHED Reserved 2025-08-06 | Published 2025-10-22 | Updated 2025-10-22 | Assigner isc

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

Problem types

CWE-405 Asymmetric Resource Consumption (Amplification)

Product status

Default status

unaffected

9.18.0 (custom)

affected

9.20.0 (custom)

affected

9.21.0 (custom)

affected

9.18.11-S1 (custom)

affected

9.20.9-S1 (custom)

affected

Credits

ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One Security and Privacy Laboratory at Nankai University for bringing this vulnerability to our attention.

References

kb.isc.org/docs/cve-2025-8677 (CVE-2025-8677) vendor-advisory

cve.org (CVE-2025-8677)

nvd.nist.gov (CVE-2025-8677)

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