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.
INFO
Published Date :
Oct. 22, 2025, 4:15 p.m.
Last Modified :
Oct. 22, 2025, 9:12 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update BIND 9 to a fixed version.
- Apply the latest security patches for BIND 9.
- Restart the BIND 9 service after updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-8677.
| URL | Resource |
|---|---|
| https://kb.isc.org/docs/cve-2025-8677 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-8677 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-8677
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-8677 vulnerability anywhere in the article.
-
CybersecurityNews
Multiple BIND 9 DNS Vulnerabilities Enable Cache Poisoning and Denial of Service Attacks
The Internet Systems Consortium (ISC) disclosed three high-severity vulnerabilities in BIND 9 on October 22, 2025, potentially allowing remote attackers to conduct cache poisoning attacks or cause den ... Read more
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Daily CyberSecurity
ISC Patches Multiple High-Severity BIND Vulnerabilities Enabling Cache Poisoning and Denial of Service Attacks
The Internet Systems Consortium (ISC) has issued patches for three high-severity vulnerabilities impacting the BIND 9 DNS server, including two that could enable cache poisoning attacks (CVE-2025-4077 ... Read more
The following table lists the changes that have been made to the
CVE-2025-8677 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 22, 2025
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-405 Added Reference https://kb.isc.org/docs/cve-2025-8677