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Vulnerability record · CVE-2020-8623 · published 21 August 2020

CVE-2020-8623: Isc bind vulnerability

Isc · Bind

In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with "--enable-native-pkcs11" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker

7.5 CVSS 3.1 High EPSS 6.4% · top 6.6% CWE-617 · CWE-617
7.5CVSS 3.1 base score, v2 4.3
6.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

Description

In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with "--enable-native-pkcs11" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html Mailing ListThird Party Advisory
https://kb.isc.org/docs/cve-2020-8623 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNK
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7US
https://security.gentoo.org/glsa/202008-19 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/ Third Party Advisory
https://usn.ubuntu.com/4468-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4752 Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html Mailing ListThird Party Advisory
https://kb.isc.org/docs/cve-2020-8623 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNK
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7US
https://security.gentoo.org/glsa/202008-19 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/ Third Party Advisory
https://usn.ubuntu.com/4468-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4752 Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19 Third Party Advisory

Track CVE-2020-8623 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-8623), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.