CVE-2025-13878: CWE-617 Reachable Assertion in ISC BIND 9
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.
AI Analysis
Technical Summary
CVE-2025-13878 is a high-severity vulnerability in ISC BIND 9 where malformed BRID/HHIT DNS records can trigger a reachable assertion failure, causing the named daemon to crash. This affects specific version ranges of BIND 9, including 9.18.40 to 9.18.43, 9.20.13 to 9.20.17, and 9.21.12 to 9.21.16, plus corresponding S1 variants. The vulnerability results in denial of service due to process termination. Red Hat advisories reference this CVE but do not provide explicit patch details in the supplied content. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation causes the named DNS server process to terminate unexpectedly, resulting in denial of service. There is no impact on confidentiality or integrity according to the CVSS vector. The attack requires no privileges and can be performed remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Red Hat has published advisories referencing this vulnerability; users should monitor these advisories for updates and apply any released patches promptly. Until a patch is available, consider mitigating exposure by restricting access to the DNS service or filtering malformed DNS records if feasible.
CVE-2025-13878: CWE-617 Reachable Assertion in ISC BIND 9
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.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/isc/bind9Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-13878 is a high-severity vulnerability in ISC BIND 9 where malformed BRID/HHIT DNS records can trigger a reachable assertion failure, causing the named daemon to crash. This affects specific version ranges of BIND 9, including 9.18.40 to 9.18.43, 9.20.13 to 9.20.17, and 9.21.12 to 9.21.16, plus corresponding S1 variants. The vulnerability results in denial of service due to process termination. Red Hat advisories reference this CVE but do not provide explicit patch details in the supplied content. No known exploits in the wild have been reported.
Potential Impact
Successful exploitation causes the named DNS server process to terminate unexpectedly, resulting in denial of service. There is no impact on confidentiality or integrity according to the CVSS vector. The attack requires no privileges and can be performed remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Red Hat has published advisories referencing this vulnerability; users should monitor these advisories for updates and apply any released patches promptly. Until a patch is available, consider mitigating exposure by restricting access to the DNS service or filtering malformed DNS records if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- isc
- Date Reserved
- 2025-12-02T11:08:04.266Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2025-13878","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:6935","vendor":"Red Hat"}]
Threat ID: 6970eb554623b1157cd44ca2
Added to database: 01/21/2026, 15:05:57 UTC
Last enriched: 07/15/2026, 08:16:03 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 560
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