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    CVE-2026-10723

    BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

    Published:Jul 22, 2026
    Last Modified:Nov 2, 2026
    EPS:Jul 22, 2026
    EPSS Score:0.00272
    CVSS Score:6.8

    Affected Products

    Vendor
    Isc
    Product
    Bind
    Vendor
    Isc
    Product
    Bind 9

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-19630 (CVSS 7.5) — In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional proces…
    CVE-2026-77119 (CVSS 5.9) — A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a se…
    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…
    CVE-2026-80274 (CVSS 7.5) — If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies …
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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