BIND 9 9.18.40-43, 9.20.13-17, 9.21.12-16 named crash via malformed BRID/HHIT
CVE-2025-13878 Published on January 21, 2026
Malformed BRID/HHIT records can cause named to terminate unexpectedly
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.
Vulnerability Analysis
CVE-2025-13878 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an assertion failure Vulnerability?
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.
CVE-2025-13878 has been classified to as an assertion failure vulnerability or weakness.
Products Associated with CVE-2025-13878
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Affected Versions
ISC BIND 9:- Version 9.18.40, <= 9.18.43 is affected.
- Version 9.20.13, <= 9.20.17 is affected.
- Version 9.21.12, <= 9.21.16 is affected.
- Version 9.18.40-S1, <= 9.18.43-S1 is affected.
- Version 9.20.13-S1, <= 9.20.17-S1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.