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.
CVE-2001-0497
HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory published 2022-04-30. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 34.9%
- KEV
- Not listed
Published
July 21, 2001
Last Modified
June 16, 2026
Advisory Details (1)
Auto-updated May 31, 2026No patch confirmed yet.
Frequently asked(5)
What is CVE-2001-0497?
CVE-2001-0497 is a high vulnerability published on July 21, 2001. 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.
When was CVE-2001-0497 disclosed?
CVE-2001-0497 was first published in the National Vulnerability Database on July 21, 2001, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2001-0497 actively exploited?
CVE-2001-0497 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2001-0497?
CVE-2001-0497 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2001-0497?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0497, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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