CVE-2001-0497: ISC BIND

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

dnskeygen in BIND 8.2.4 and earlier, and dnssec-keygen in BIND 9.1.2 and earlier, set insecure permissions for a HMAC-MD5 shared secret key file used for DNS Transactional Signatures (TSIG), which allows attackers to obtain the keys and perform dynamic DNS updates.

Affected products

• ISC BIND: up to and including 8.2.4; from 9.0, up to and including 9.1.2

Published 2001-07-21. Last modified 2026-06-16.