CVE-2025-13878 is a denial-of-service vulnerability in ISC BIND 9 affecting the named daemon’s handling of BRID and HHIT DNS resource records. Malformed BRID or HHIT records with undersized or otherwise invalid RDATA can reach assertion conditions during record processing and re-encoding, causing named to terminate unexpectedly. Reported crash paths involve dns_rdata_towire()-related assertions in the BRID and HHIT record handling code. The 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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A remote, network-reachable denial-of-service vulnerability in ISC BIND 9 where malformed BRID/HHIT DNS records can cause the named daemon to terminate unexpectedly, resulting in DNS service outage.
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A high-severity remote denial-of-service vulnerability in ISC BIND 9 where malformed/corrupt BRID/HHIT DNS record handling can cause the named daemon to terminate (crash) when triggered remotely via a crafted request/packet.
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