CVE-2026-3104
Memory leak in code preparing DNSSEC proofs of non-existence
Description
A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
ISC
commercial·USaka internet systems consortium
Exploitability
0 exploit sources identified
Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.
View exploit details Official Patch Available
Workaround Available
References
https://kb.isc.org/docs/cve-2026-3104
kb.isc.org
https://downloads.isc.org/isc/bind9/9.20.21
downloads.isc.org
https://downloads.isc.org/isc/bind9/9.21.20
downloads.isc.org
and 4 more references View all →
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