CVE-2026-19033 Affecting bind package, versions <9.20.29-r1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.24% (14th percentile)

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  • Snyk IDSNYK-WOLFILATEST-BIND-20197583
  • published28 Sept 2026
  • disclosed16 Sept 2026

Introduced: 16 Sep 2026

NewCVE-2026-19033  (opens in a new tab)

How to fix?

Upgrade Wolfi bind to version 9.20.29-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind package and not the bind package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

For a secondary zone with transfers restricted by TSIG, named may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, named does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945. 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.

CVSS Base Scores

version 3.1