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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-1519 Detail

Description

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://downloads.isc.org/isc/bind9/9.18.47 Internet Systems Consortium (ISC) Patch 
https://downloads.isc.org/isc/bind9/9.20.21 Internet Systems Consortium (ISC) Patch 
https://downloads.isc.org/isc/bind9/9.21.20 Internet Systems Consortium (ISC) Patch 
https://kb.isc.org/docs/cve-2026-1519 Internet Systems Consortium (ISC) Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2026/04/msg00008.html CVE Issue Tracking  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-606 Unchecked Input for Loop Condition Internet Systems Consortium (ISC)  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-1519
NVD Published Date:
03/25/2026
NVD Last Modified:
06/17/2026
Source:
Internet Systems Consortium (ISC)