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Alerts This Week
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Debian Bookworm BIND9 Critical ACL Bypass DoS Vulnerabilities DSA-6181-1

debian
Calendar Grey March 27, 2026
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Multiple critical flaws in BIND resolved with upgrades to prevent ACL bypass and DoS issues.
Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in bypass of ACL restrictions or denial of service
Topics%20covered

Topics Covered

security advisory denial of service critical debian DNS

Summary

For the oldstable distribution (bookworm), these problems have been
fixed in version 1:9.18.47-1~deb12u1. The oldstable distribution is only
affected by CVE-2026-1519.

For the stable distribution (trixie), these problems have been fixed in
version 1:9.20.21-1~deb13u1.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/bind9

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: bind9
CVE ID: CVE-2026-1519 CVE-2026-3104 CVE-2026-3119 CVE-2026-3591

Topics%20covered

Topics Covered

security advisory denial of service critical debian DNS

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