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    CVE-2026-97313

    A recursive BIND server that receives a query with recursion desired (RD=1) followed by a non-recursive query (RD=0) may exit with an assertion failure, resulting in a denial of service. To be vulnerable, the BIND server must allow recursive queries and have at least two RPZ zones configured: one with the default setting of "recursive-only yes", and the other with "recursive-only no". This issue affects BIND 9 versions 9.16.0 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.

    Published:Oct 21, 2026
    Last Modified:Oct 21, 2026
    EPS:Oct 21, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Isc
    Product
    Bind
    Vendor
    Isc
    Product
    Bind 9

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-617 Reachable Assertion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-75029 (CVSS 5.3) — In a query response, an attacker may send `named` multiple copies of a record that should only exist once (suc…
    CVE-2026-19668 (CVSS 5.3) — A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a pa…
    CVE-2026-19033 (CVSS 6.5) — For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High