CVE-2026-3592
Isc Bind 9.11.0 – 9.16.50
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LSummary
CVE-2026-3592 is a medium-severity Incorrect Behavior Order: Early Amplification (CWE-408) vulnerability in Isc Bind. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Network Denial of Service (T1498); ranked at the 34th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-14 (Permitted Actions Without Identification or Authentication) and AC-3 (Access Enforcement) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-31106
Vulnerability Data
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,…
more
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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 4 hardening rules · 3 OS baselines
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Mitigating Controls (NIST 800-53 r5) AI
Explicitly identifies and limits actions permitted without identification or authentication, directly stopping early expensive operations.
Access enforcement requires authorization checks before any operation, structurally blocking expensive actions prior to authentication.
Requires unique identification and authentication of users before associating privileges, preventing unauthenticated expensive work.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Access control policies that enforce authentication before resource-intensive operations directly prevent early amplification.
Identity management ensures entities are identified and authenticated prior to performing expensive actions.
Access rights provisioning can restrict expensive operations until authorization is granted.
Privileged access rights limit who can perform costly actions but do not enforce authentication order.
Information access restriction mechanisms can block resource-intensive operations until authentication succeeds.
Secure authentication ensures identity verification occurs before expensive operations are allowed.