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CVE-2026-75029 (GCVE-0-2026-75029)

Vulnerability from cvelistv5 – Published: 2026-09-16 14:15 – Updated: 2026-09-16 14:15
VLAI
Title
Message parser retains every identical singleton RDATA, enabling wire-to-work amplification
Summary
In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
Impacted products
Vendor Product Version CPE status
ISC BIND 9 Affected: 9.11.0 , ≤ 9.18.50 (custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom)
Affected: 9.21.0 , ≤ 9.21.25 (custom)
Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom)
Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom)
    cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
    cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
    cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
    cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
    cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-16 00:00
Show details on NVD website
To clipboard 

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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
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        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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          "name": "CVE-2026-75029",
          "tags": [
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          "url": "https://kb.isc.org/docs/cve-2026-75029"
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          "url": "https://downloads.isc.org/isc/bind9/9.20.29"
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          "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.20.29, 9.21.26, or 9.20.29-S1."
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      "title": "Message parser retains every identical singleton RDATA, enabling wire-to-work amplification",
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    "dateReserved": "2026-08-17T14:56:23.749Z",
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    "state": "PUBLISHED"
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      "cve": "CVE-2026-75029",
      "id": "CVE-2026-75029",
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      "product_status:known_affected": "76",
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      "source": "Red Hat CSAF VEX",
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      "title": "bind: BIND 9: Denial of Service via crafted query responses",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75029.json",
      "version": "3"
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}



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