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Vulnerability record · CVE-2014-8602 · published 11 December 2014

CVE-2014-8602: Nlnetlabs unbound vulnerability

Nlnetlabs · Unbound

iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.

4.3 CVSS 2.0 Medium EPSS 25% · top 2.1% CWE-399 · CWE-399
4.3CVSS 2.0 base score
25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.

AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cert.ssi.gouv.fr/site/CERTFR-2014-AVI-512/index.html Third Party Advisory
http://unbound.net/downloads/patch_cve_2014_8602.diff Patch
http://www.debian.org/security/2014/dsa-3097 Third Party Advisory
http://www.kb.cert.org/vuls/id/264212 Third Party AdvisoryUS Government Resource
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/71589
http://www.ubuntu.com/usn/USN-2484-1 Third Party Advisory
https://unbound.net/downloads/CVE-2014-8602.txt PatchVendor Advisory
http://cert.ssi.gouv.fr/site/CERTFR-2014-AVI-512/index.html Third Party Advisory
http://unbound.net/downloads/patch_cve_2014_8602.diff Patch
http://www.debian.org/security/2014/dsa-3097 Third Party Advisory
http://www.kb.cert.org/vuls/id/264212 Third Party AdvisoryUS Government Resource
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/71589
http://www.ubuntu.com/usn/USN-2484-1 Third Party Advisory
https://unbound.net/downloads/CVE-2014-8602.txt PatchVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2014-8602), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.