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Vulnerability record · CVE-2018-5737 · published 16 January 2019

CVE-2018-5737: Isc bind vulnerability

Isc · Bind

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

7.5 CVSS 3.0 High EPSS 10% · top 4.4% CWE-617 · CWE-617
7.5CVSS 3.0 base score, v2 5.0
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/104236 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040942 Third Party AdvisoryVDB Entry
https://kb.isc.org/docs/aa-01606 Vendor Advisory
https://security.netapp.com/advisory/ntap-20180926-0004/ Third Party Advisory
http://www.securityfocus.com/bid/104236 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040942 Third Party AdvisoryVDB Entry
https://kb.isc.org/docs/aa-01606 Vendor Advisory
https://security.netapp.com/advisory/ntap-20180926-0004/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-5737), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.