HIGH 8.7 NVD
CVE-2026-123571
Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via mal
Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via malformed records. Attackers can send a crafted TSIG record in DNS wire format to cause unchecked subtraction underflow, crashing builds with overflow checks enabled and causing denial of service.
References
- https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-x962-5xwx-fr8x
- https://www.vulncheck.com/advisories/hickory-dns-from-0.26.0-before-0.26.2-panic-via-tsig-
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-11-08 via NVD.
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