In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND.
In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Product
- BIND
- CVSS
- 7.5
- EPSS
- 0.004 (p39)
- Exposure class
- Edge / VPN / firewall
Why it ranks 28 (Notable)
- CVSS 7.5 high
- Exposed product class: edge / VPN / firewall
- Covered by 2 independent sources
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-19630 on this site · NVD · CVE.org · Vulnpedia
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