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Vulnerability record · CVE-2018-5736 · published 16 January 2019

CVE-2018-5736: Isc bind vulnerability

Isc · Bind

An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession. This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named process to exit after failing the assertion test. Affects BIND 9.12.0 and 9.12.1.

5.3 CVSS 3.0 Medium EPSS 18% · top 2.9% CWE-617 · CWE-617
5.3CVSS 3.0 base score, v2 3.5
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession. This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named process to exit after failing the assertion test. Affects BIND 9.12.0 and 9.12.1.

CVSS:3.0/AV:N/AC:H/PR:L/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/104386 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040941 Third Party AdvisoryVDB Entry
https://kb.isc.org/docs/aa-01602 Vendor Advisory
https://security.netapp.com/advisory/ntap-20180926-0004/ Third Party Advisory
http://www.securityfocus.com/bid/104386 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040941 Third Party AdvisoryVDB Entry
https://kb.isc.org/docs/aa-01602 Vendor Advisory
https://security.netapp.com/advisory/ntap-20180926-0004/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-5736), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.