CVE-2020-5591

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

XACK DNS 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 allow remote attackers to cause a denial of service condition resulting in degradation of the recursive resolver's performance or compromising the recursive resolver as a reflector in a reflection attack.

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-674

Affected software

Vendor	Product	Versions
XACK, Inc.	XACK DNS	1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0

References

https://jvn.jp/en/jp/JVN40208370/index.htmlMitigation, Third Party Advisory, VDB Entry
https://xack.co.jp/info/?ID=622Vendor Advisory
https://jvn.jp/en/jp/JVN40208370/index.htmlMitigation, Third Party Advisory, VDB Entry
https://xack.co.jp/info/?ID=622Vendor Advisory

Timeline

Published: Jun 5, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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