CVE-2025-13878
Malformed BRID/HHIT records can cause named to terminate unexpectedly
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-617 |
| Vendor | isc |
| Product | bind 9 |
| Published | Jan 21, 2026 |
| Last Updated | Jun 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
ISC / BIND 9
9.18.40 ≤ 9.18.43 9.20.13 ≤ 9.20.17 9.21.12 ≤ 9.21.16 9.18.40-S1 ≤ 9.18.43-S1 9.20.13-S1 ≤ 9.20.17-S1
References
kb.isc.org: https://kb.isc.org/docs/cve-2025-13878 downloads.isc.org: https://downloads.isc.org/isc/bind9/9.18.44 downloads.isc.org: https://downloads.isc.org/isc/bind9/9.20.18 downloads.isc.org: https://downloads.isc.org/isc/bind9/9.21.17 openwall.com: http://www.openwall.com/lists/oss-security/2026/01/21/3 access.redhat.com: https://access.redhat.com/security/cve/CVE-2025-13878 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2431600 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-13878.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:6935
Credits
ISC would like to thank Vlatko Kosturjak from Marlink Cyber for bringing this vulnerability to our attention.