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Vulnerability record · CVE-2025-8677 · published 22 October 2025

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

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.

7.5 CVSS 3.1 High EPSS 11% · top 4.3% CWE-405 · CWE-405 Deferred
7.5CVSS 3.1 base score
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

References

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

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Source: NIST National Vulnerability Database (record CVE-2025-8677), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.