Asymmetric Resource Consumption (Amplification) Affecting bind package, versions [,9.18.41)[,9.20.15)[,9.21.14)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-BIND-13703825
- published24 Oct 2025
- disclosed22 Oct 2025
- creditZuyao Xu and Xiang Li
Introduced: 22 Oct 2025
NewCVE-2025-8677 (opens in a new tab)How to fix?
Upgrade bind to version 9.18.41, 9.20.15, 9.21.14 or higher.
Overview
Affected versions of this package are vulnerable to Asymmetric Resource Consumption (Amplification) via the DNSKEY record validation. An attacker can exhaust CPU resources and degrade resolver performance by sending zones with malformed DNSKEY records, resulting in service disruption for legitimate clients.
Workaround
This vulnerability can be mitigated by restricting recursive queries to trusted or internal networks, applying rate limiting or firewall rules to block excessive requests, enabling DNSSEC validation, isolating recursive resolvers from authoritative servers, and actively monitoring CPU usage and query volume for anomalies.