CVE-2025-8677
Resource exhaustion via malformed DNSKEY handling
Description
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion. This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
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
and 2 more affected products View all →
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-2025-8677
kb.isc.org
http://www.openwall.com/lists/oss-security/2025/10/22/1
openwall.com
https://kb.isc.org/docs/cve-2025-8677
kb.isc.org
and 5 more references View all →
Timeline
Published
Oct 22, 2025
Last Updated
Nov 4, 2025
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