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7.5 High

CVE-2025-8677 Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU…

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.

Affected products and versions

Product Affected versions Fixed in
BIND 9 9.21 9.21.0 → 9.21.12 No fix stated
BIND 9 9.20 9.20.0 → 9.20.13 No fix stated
BIND 9 9.18 9.18.0 → 9.18.39 No fix stated

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