# CVE-1999-0184: ISC BIND unauthorized DNS record modification via dynamic updates

Source: https://junglewise.ai/threats/cve-1999-0184-isc-bind-unauthorized-dns-record-modification-via-dynamic-updates  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 1997-07-01. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-1999-0184 · Severity: medium · CVSS 6.4 · Published 1997-07-01

ISC BIND, a widely used system for translating human-readable domain names into IP addresses, contains a security flaw when specific configuration options are enabled during installation. This flaw allows unauthorized individuals to remotely modify DNS records, which could lead to website redirection, email interception, or service disruptions. Organizations using affected versions may face significant reputational and operational risks if their internet traffic is diverted to malicious sites.

Technologies: [Isc Bind](https://junglewise.ai/threats/technologies/bind). Vendors: [Isc](https://junglewise.ai/threats/vendors/isc).

## Quick answers

**Is CVE-1999-0184 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-1999-0184 being exploited in the wild.

**How severe is CVE-1999-0184?** Medium severity, with a CVSS score of 6.4, published 1 July 1997.

**Which products and versions are affected?** ISC BIND.

**Is there a fix for CVE-1999-0184?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-1999-0184 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-1999-0184?** Check whether you run Isc Bind. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in ISC BIND when the software is compiled with the '-DALLOW_UPDATES' flag enabled. This configuration allows the DNS server to accept dynamic update requests without sufficient authentication or authorization checks. A remote, unauthenticated attacker can send specially crafted update packets to the server to add, delete, or modify DNS resource records. This can result in DNS cache poisoning or redirection of legitimate traffic to attacker-controlled infrastructure. The issue is rooted in the insecure default behavior of the dynamic update feature in early versions of the software.

## Affected products

- ISC BIND

## Timeline

- 1997-07-01: disclosed

## References

- [https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0184](https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0184)

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