CVE-2025-13878
Unknown Unknown - Not Provided
Malformed BRID/HHIT Records Cause BIND Named Crash (DoS

Publication date: 2026-01-21

Last updated on: 2026-01-21

Assigner: Internet Systems Consortium (ISC)

Description
Malformed BRID/HHIT records can cause `named` to terminate unexpectedly. This issue affects BIND 9 versions 9.18.40 through 9.18.43, 9.20.13 through 9.20.17, 9.21.12 through 9.21.16, 9.18.40-S1 through 9.18.43-S1, and 9.20.13-S1 through 9.20.17-S1.
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Meta Information
Published
2026-01-21
Last Modified
2026-01-21
Generated
2026-06-16
AI Q&A
2026-01-21
EPSS Evaluated
2026-06-15
NVD
CVE-2025-13878
EUVD
EUVD-2026-3599
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
isc bind From 9.18.40 (inc) to 9.18.43 (inc)
isc bind From 9.20.13 (inc) to 9.20.17 (inc)
isc bind From 9.21.12 (inc) to 9.21.16 (inc)
isc bind From 9.18.40-S1 (inc) to 9.18.43-S1 (inc)
isc bind From 9.20.13-S1 (inc) to 9.20.17-S1 (inc)
isc bind 9.18.44
isc bind 9.20.18
isc bind 9.21.17
isc bind 9.18.44-S1
isc bind 9.20.18-S1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-617 The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
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Executive Summary

CVE-2025-13878 is a vulnerability in BIND 9 DNS software where malformed BRID/HHIT DNS records cause the named daemon to terminate unexpectedly. This leads to a denial of service by crashing the DNS server or resolver. The issue affects multiple versions of BIND 9 and can be exploited remotely without authentication or user interaction. [4]

Impact Analysis

This vulnerability can cause your DNS server or resolver running affected BIND 9 versions to crash unexpectedly, resulting in denial of service. This impacts the availability of DNS services, potentially disrupting network operations and access to resources dependent on DNS resolution. [4]

Mitigation Strategies

To mitigate this vulnerability, you should upgrade BIND 9 to one of the patched releases: 9.18.44, 9.20.18, 9.21.17, or the corresponding Supported Preview Editions 9.18.44-S1 and 9.20.18-S1. No workarounds are currently known, so upgrading to a fixed version is the recommended immediate step. [4, 3, 2, 1]

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