VulnerabilityDeferred

CVE-2025-8677

Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.

HIGH 7.5EPSS 11.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 11.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

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: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 11.20% probability · 96th percentile
CISA KEV: Not listed
Weakness: CWE-405
Source: security-officer@isc.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.