CVE record · CVE-2020-17049

Kerberos KDC Security Feature Bypass Vulnerability

CVSS 6.6 MediumEPSS 0.14 · 96th percentile

Published by the CVE Program (CNA: microsoft) at 11 Nov 2020, 00:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Microsoft	Windows Server 2019	affected 10.0.0 to before 10.0.17763.2061 custom
Microsoft	Windows Server 2019 (Server Core installation)	affected 10.0.0 to before 10.0.17763.2061 custom
Microsoft	Windows Server, version 1909 (Server Core installation)	affected 10.0.0 to before publication custom
Microsoft	Windows Server, version 1903 (Server Core installation)	affected 10.0.0 to before publication custom
Microsoft	Windows Server version 2004	affected 10.0.0 to before 10.0.19041.1110 custom
Microsoft	Windows Server 2016	affected 10.0.0 to before 10.0.14393.4530 custom
Microsoft	Windows Server 2016 (Server Core installation)	affected 10.0.0 to before 10.0.14393.4530 custom
Microsoft	Windows Server 2008 Service Pack 2	affected 6.0.0 to before 6.0.6003.21167 custom
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	affected 6.0.0 to before 6.0.6003.21167 custom
Microsoft	Windows Server 2008 Service Pack 2	affected 6.0.0 to before 6.0.6003.21167 custom
Microsoft	Windows Server 2008 R2 Service Pack 1	affected 6.1.0 to before 6.1.7601.25661 custom
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	affected 6.0.0 to before 6.1.7601.25661 custom
Microsoft	Windows Server 2012	affected 6.2.0 to before 6.2.9200.23409 custom
Microsoft	Windows Server 2012 (Server Core installation)	affected 6.2.0 to before 6.2.9200.23409 custom
Microsoft	Windows Server 2012 R2	affected 6.3.0 to before 6.3.9600.20069 custom
Microsoft	Windows Server 2012 R2 (Server Core installation)	affected 6.3.0 to before 6.3.9600.20069 custom
Microsoft	Windows Server version 20H2	affected 10.0.0 to before 10.0.19041.1110 custom

Identifiers: CVE-2020-17049
CNA: microsoft
Tags: Microsoft Windows Server 2019
Microsoft Windows Server 2019 (Server Core installation)
Microsoft Windows Server, version 1909 (Server Core installation)
Microsoft Windows Server, version 1903 (Server Core installation)
Microsoft Windows Server version 2004
Microsoft Windows Server 2016
Microsoft Windows Server 2016 (Server Core installation)
Microsoft Windows Server 2008 Service Pack 2
Published: 11 Nov 2020
Updated: 15 Nov 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.6	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	CNA (microsoft)

CISA KEV Not listed.
EPSS 0.14, the 96th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Nov 2020. New records show when each source confirmed them.

Sources

References from the CNA

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17049
www.openwall.com/lists/oss-security/2021/11/10/3 mailing-list
security.gentoo.org/glsa/202309-06 vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.