Status of Windows 7, Windows Server 2008 R2, and Windows 10 v1803/v1809 micropatches

This article presents the current status of vulnerabilities affecting Windows 7 and Windows Server 2008 R2 after their end of support on January 14, 2020, as well as the current status of our micropatches issued for these vulnerabilities. Note that in order for us to issue a micropatch for a vulnerability, we must consider it high-risk and have a test case ("POC", proof-of-concept) at hand to be able to reproduce and analyze the issue. Accordingly, only vulnerabilities currently eligible for micropatching are included in the table.    

The table below will be continually updated with status changes (e.g., if a vulnerability becomes exploited, if our risk assessment changes, when we issue a micropatch) and new eligible vulnerabilities as we become aware of them either through Microsoft's documentation or other sources (e.g., a vulnerability getting published or privately reported to us).

For any questions please contact [e-mail].

CVE ID	Title	Public	RCE	Exploited	Comment	0patch status
CVE-2021-CVE-2021-31959	Remote Code Execution Issue in Internet Explorer	yes	yes	no	POC published by security researcher	Micropatch issued on 6/14/2020 for Windows 7, Server 2008 R2, Windows 10 v1803, Windows 10 v1809
CVE-2021-26419	Remote Code Execution Issue in Internet Explorer	yes	yes	no	POC published by security researcher	Micropatch issued on 5/18/2020 for Windows 7 and Server 2008 R2
CVE-2021-26415	Windows Installer Local Privilege Escalation	yes	no	no	POC published by security researcher	Micropatch issued on 5/6/2021 for Windows 7 and Server 2008 R2
CVE-2021-26897	Windows DNS Server SIG Record Buffer Overflow	yes	yes	no	POC recreated from public data	Micropatch issued on 3/23/2020 for Windows Server 2008 R2 (Windows 7 is not affected)
CVE-2021-26877	Windows DNS Server TXT Record Out-Of-Bounds Read	yes	yes	no	POC recreated from public data	Micropatch issued on 3/23/2020 for Windows Server 2008 R2 (Windows 7 is not affected)
CVE-2021-26411	Internet Explorer HTML Attribute nodeValue Double Free	yes	yes	yes	POC published by security researchers, exploited in an attack campaign against security researchers	Micropatch issued on 2/11/2020 for Windows 7 and Server 2008 R2
CVE-2020-1030	Windows Print Spooler Elevation of Privilege	yes	no	no	POC published by security researcher	Micropatch issued on 2/9/2021 for Windows 7 and Server 2008 R2
CVE-2021-1727	Windows Installer Local Privilege Escalation	yes	no	no	POC published by security researcher	Micropatch issued on 1/28/2021 for Windows 7 and Server 2008 R2
CVE-2020-1013	WSUS Spoofing Local Privilege Escalation	yes	no	no	POC published by security researcher	Micropatch issued on 12/23/2020 for Windows 7 and Server 2008 R2
CVE-2020-17001	Windows Print Spooler Elevation of Privilege	yes	no	no	POC published by security researcher	Micropatch issued on 12/2/2020 for Windows 7 and Server 2008 R2
CVE-2021-27091 N/A (0day)	Windows RpcEptMapper and Dnscache Service Insecure Registry Permissions EoP	yes	no	no	POC published by security researcher. Microsoft fixed the issue for RpcEptMapper (CVE-2021-27091) with April 2021 updates but Dnscache is still affected	Micropatch issued on 11/25/2020 for Windows 7 and Server 2008 R2
CVE-2020-1300	Windows Cabinet File Directory Traversal	yes	yes	no	POC published by security researcher	Micropatch issued on 11/17/2020 for Windows 7 and Server 2008 R2
CVE-2021-1640	Windows Print Spooler Arbitrary File Creation	no	no	no	Vulnerability discovered by the 0patch team and reported to Microsoft. (Microsoft fixed it after 130+ days.)	Micropatch issued on 10/27/2020 for Windows 7 and Server 2008 R2
CVE-2020-0968	Scripting Engine Memory Corruption	yes	yes	no	POC published by security researcher	Micropatch issued on 10/16/2020 for Windows 7 and Server 2008 R2
CVE-2020-1062	Scripting Engine Memory Corruption	yes	yes	no	POC published by security researcher	Micropatch issued on 10/16/2020 for Windows 7 and Server 2008 R2
CVE-2020-1472	Microsoft Netlogon Elevation of Privilege ("Zerologon")	yes	no	yes	POC published by security researchers, exploited in various ransomware campaigns	Micropatch issued on 9/17/2020 for Windows Server 2008 R2
CVE-2020-1380	Scripting Engine Memory Corruption	yes	yes	yes	POC published by security researchers, exploited in Operation PowerFall	Micropatch issued on 9/14/2020 for Windows 7 and Server 2008 R2
CVE-2020-1530	Windows Remote Access Phonebook Use-After-Free	yes	yes	no	POC published by security researcher	Micropatch issued on 9/9/2020 for Windows 7 and Server 2008 R2 (Note that the vulnerability exists in two places, each in its own DLLs, which is why each Windows platform has two micropatches.)
CVE-2020-1337	Windows Print Spooler Elevation of Privilege Vulnerability	yes	no	no	POC published by security researcher	Micropatch issued on 9/1/2020 for Windows 7 and Server 2008 R2
CVE-2020-1113	Windows Task Scheduler Security Feature Bypass	yes	yes	no	POC published by security researcher	Micropatch issued on 8/11/2020 for Windows Server 2008 R2
CVE-2020-1350	Windows DNS Server Remote Code Execution VulnerabilityWindows DNS Server Remote Code Execution Vulnerability	yes	yes	no	POC published by security researcher	Micropatch issued on 7/17/2020 for Windows Server 2008 R2
CVE-2020-0662	Memory Corruption in Windows DHCP Message Processing	yes	yes	no	POC published by security researcher	Micropatch issued on 7/16/2020 for Windows 7 and Server 2008 R2
CVE-2020-1299	LNK Remote Code Execution Vulnerability	no	yes	no	POC provided by security researcher	Micropatch issued on 6/26/2020 for Windows 7 and Server 2008 R2
CVE-2020-1281	OLE Remote Code Execution Vulnerability	yes	yes	no	POC published by researcher	Micropatch issued on 6/16/2020 for Windows 7 and Server 2008 R2
CVE-2020-1015	User-Mode Power Service Memory Corruption	yes	no	no	POC published by researcher	Micropatch issued on 5/27/2020 for Windows 7 and Server 2008 R2
CVE-2020-1048	Print Spooler Elevation of Privilege ("PrintDemon")	yes	no	yes	POC published by researcher	Micropatch issued on 5/20/2020 for Windows 7 and Server 2008 R2
CVE-2020-0687	Microsoft Graphics Remote Code Execution Vulnerability	no	yes	no	POC provided by security researcher	Micropatch issued on 4/22/2020 for Windows 7 and Server 2008 R2
CVE-2020-0729	LNK Remote Code Execution Vulnerability	yes	yes	no	User must be tricked into opening a folder under attacker's control (e.g., from a remote share or a USB key). Stuxnet exploited a similar vulnerability.	Micropatch issued on 4/3/2020 for Windows 7 and Server 2008 R2
CVE-2020-0938, CVE-2020-1020	Type 1 Font Parsing Remote Code Execution Vulnerability	no	yes	yes	Initially a 0day, fixed by Microsoft with April 2020 updates.	Micropatch issued on 3/27/2020 for Windows 7 and Server 2008 R2 - this micropatch prevents the processing of Type 1 PostScript fonts
CVE-2020-0668	Windows Service Tracing Elevation of Privilege Vulnerability	yes	no	no	POC published by researcher	Micropatch issued on 3/20/2020 for Windows 7 and Server 2008 R2
CVE-2020-0881	GDI+ Remote Code Execution Vulnerability	no	yes	no	POC obtained	Micropatch issued on 3/19/2020 for Windows 7 and Server 2008 R2
CVE-2020-0683	Windows Installer Elevation of Privilege Vulnerability	yes	no	no	POC published by researcher	Micropatch issued on 3/12/2020 for Windows 7 and Server 2008 R2
CVE-2020-0674	Scripting Engine Memory Corruption Vulnerability	yes	yes	yes	Found exploited in the wild in limited attacks; vendor initially provided a workaround; we created a micropatch to implement the same workaround without side effects;	Micropatch issued on 2/19/2020 for Windows 7 / Server 2008 R2, and previous "temporary workaround" micropatch (402) revoked for these platforms Micropatch issued on 2/21/2020 for Windows 10 v1903/v1909 and previous "temporary workaround" micropatch (407) revoked for these platforms Note: this micropatch modifies the behavior of JScript function sort such that calling it with a callback function will behave as if it was called without one (i.e., sort will always perform a string-based sort). We assess this will affect a small number of applications, and not in a critical way. ("Temporary workaround" micropatches 403, 404, 405, 407 remain in place for other platforms.)