Is CVE-2025-8677 actively exploited?

No active exploitation of CVE-2025-8677 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-8677 be exploited remotely?

Yes. CVE-2025-8677 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-8677?

CVE-2025-8677 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2025-8677

HIGH

CVE-2025-8677

CWE-405Published: October 22, 2025· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-8677 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.