Vulnerability in Isc Bind
CVE-2026-3592
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Isc Bind
- Isc Bind 9 — versions 9.11.0, 9.18.0, 9.20.0
Weakness classification (CWE)
References
- security-officer@isc.org (Patch, patch)
- security-officer@isc.org (Patch, patch)
- security-officer@isc.org (Patch, patch)
- security-officer@isc.org (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-3592?
- CVE-2026-3592 is a medium-severity vulnerability in Isc Bind, classified under CWE-408. CVSS score: 5.3/10. Published 2026-05-20.
- How severe is CVE-2026-3592?
- Medium severity. CVSS v3 base score is 5.3 out of 10.