CVE-2001-0497

Name: CVE-2001-0497
Creator: NVD / NIST
Published: 2001-07-21T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.43%

Last modified Jun 16, 2026

CVE-2001-0497 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.43%

34.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Isc	Bind	<= 8.2.4
Isc	Bind	>= 9.0, <= 9.1.2

References

http://www.osvdb.org/5609Broken Link
http://xforce.iss.net/alerts/advise78.phpPatch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6694Third Party Advisory, VDB Entry
http://www.osvdb.org/5609Broken Link
http://xforce.iss.net/alerts/advise78.phpPatch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6694Third Party Advisory, VDB Entry

Timeline

Published: Jul 21, 2001
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2001-0497?

How severe is CVE-2001-0497?

CVE-2001-0497 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2001-0497?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2001-0497?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST