CVE-2020-8620

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

Vendor	Product	Versions
ISC	BIND9	>= 9.15.6, < *

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlThird Party Advisory
https://kb.isc.org/docs/cve-2020-8620Vendor Advisory
https://security.gentoo.org/glsa/202008-19Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
https://usn.ubuntu.com/4468-1/Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlThird Party Advisory
https://kb.isc.org/docs/cve-2020-8620Vendor Advisory
https://security.gentoo.org/glsa/202008-19Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
https://usn.ubuntu.com/4468-1/Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory

Timeline

Published: Aug 21, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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