CVE-2009-0858

Name: CVE-2009-0858
Creator: NVD / NIST
Published: 2009-03-09T21:30:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.28%

Last modified Jun 16, 2026

CVE-2009-0858 is a vulnerability of currently unknown severity. The response_addname function in response.c in Daniel J. Bernstein djbdns 1.05 and earlier does not constrain offsets in the required manner, which allows remote attackers, with control over a third-party subdomain served by tinydns and axfrdns, to trigger DNS responses containing arbitrary records via crafted zone data for this subdomain.. EPSS estimates a 6.28% chance of exploitation in the next 30 days.

Description

The response_addname function in response.c in Daniel J. Bernstein djbdns 1.05 and earlier does not constrain offsets in the required manner, which allows remote attackers, with control over a third-party subdomain served by tinydns and axfrdns, to trigger DNS responses containing arbitrary records via crafted zone data for this subdomain.

Metrics

EPSS Probability

6.28%

92.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
D.J.Bernstein	Djbdns	<= 1.05

References

Timeline

Published: Mar 9, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0858?

How severe is CVE-2009-0858?

Severity scoring for CVE-2009-0858 is pending analysis. The EPSS model estimates a 6.28% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0858?

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-2009-0858?

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

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Source: NVD / NIST