CVE-2021-34527
Description
A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. UPDATE July 7, 2021: The security update for Windows Server 2012, Windows Server 2016 and Windows 10, Version 1607 have been released. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability. In addition to installing the updates, in order to secure your system, you must confirm that the following registry settings are set to 0 (zero) or are not defined (Note: These registry keys do not exist by default, and therefore are already at the secure setting.), also that your Group Policy setting are correct (see FAQ): HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows NTPrintersPointAndPrint NoWarningNoElevationOnInstall = 0 (DWORD) or not defined (default setting) UpdatePromptSettings = 0 (DWORD) or not defined (default setting) Having NoWarningNoElevationOnInstall set to 1 makes your system vulnerable by design. UPDATE July 6, 2021: Microsoft has completed the investigation and has released security updates to address this vulnerability. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability. See also KB5005010: Restricting installation of new printer drivers after applying the July 6, 2021 updates. Note that the security updates released on and after July 6, 2021 contain protections for CVE-2021-1675 and the additional remote code execution exploit in the Windows Print Spooler service known as PrintNightmare, documented in CVE-2021-34527.
Risk Information
Base Score
8.8
MODERATE
Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:T/RC:C
EPSS Score
Exploitation Probability
94.274
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 2004 for x86-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server, version 2004 for x64-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 2004 for x64-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 20H2 for x64-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 20H2 for x86-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 21H1 for x64-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 21H1 for x86-based Systems (KB5004945) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1909 for x86-based Systems (KB5004946) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1909 for x64-based Systems (KB5004946) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1809 for x86-based Systems (KB5004947) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2019 for x64-based Systems (KB5004947) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1809 for x64-based Systems (KB5004947) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1507 for x86-based Systems (KB5004950) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1507 for x64-based Systems (KB5004950) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 R2 for x64-based Systems (KB5004951) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 7 for x64-based Systems (KB5004951) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 7 for x86-based Systems (KB5004951) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 R2 for x64-based Systems (KB5004953) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 7 for x64-based Systems (KB5004953) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 7 for x86-based Systems (KB5004953) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 8.1 for x86-based Systems (KB5004954) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2012 R2 for x64-based Systems (KB5004954) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 8.1 for x64-based Systems (KB5004954) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 for x86-based Systems (KB5004955) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 for x64-based Systems (KB5004955) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 8.1 for x86-based Systems (KB5004958) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2012 R2 for x64-based Systems (KB5004958) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 8.1 for x64-based Systems (KB5004958) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 for x64-based Systems (KB5004959) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2008 for x86-based Systems (KB5004959) (ESU) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1607 for x86-based Systems (KB5004948) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2016 for x64-based Systems (KB5004948) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows 10 Version 1607 for x64-based Systems (KB5004948) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2012 for x64-based Systems (KB5004956) (CVE-2021-34527) | Windows |
| Windows Print Spooler Remote Code Execution Vulnerability for Windows Server 2012 for x64-based Systems (KB5004960) (CVE-2021-34527) | Windows |
| Microsoft MSHTML Remote Code Execution Vulnerability for Microsoft server operating system version 21H2 for x64-based Systems (KB5005575) | Windows |
| Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability for Windows 11 for x64-based Systems (KB5007215) | Windows |
| Windows Point-to-Point Tunneling Protocol Remote Code Execution Vulnerability for Windows 11 Version 22H2 for x64-based Systems (KB5018427) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 20H2 for x64-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 21H1 for x86-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 21H2 for x64-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 21H2 for x86-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 22H2 for x86-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 21H1 for x64-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 20H2 for x86-based Systems (KB5019959) | Windows |
| Windows Kerberos RC4-HMAC Elevation of Privilege for Windows 10 Version 22H2 for x64-based Systems (KB5019959) | Windows |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-31682 | 2021-07 Cumulative Update for Windows 10 Version 2004 for x86-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31683 | 2021-07 Cumulative Update for Windows Server, version 2004 for x64-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31684 | 2021-07 Cumulative Update for Windows 10 Version 2004 for x64-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31686 | 2021-07 Cumulative Update for Windows 10 Version 20H2 for x64-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31687 | 2021-07 Cumulative Update for Windows 10 Version 20H2 for x86-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31688 | 2021-07 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31689 | 2021-07 Cumulative Update for Windows 10 Version 21H1 for x86-based Systems (KB5004945) (CVE-2021-34527) |
| PATCH-31680 | 2021-07 Cumulative Update for Windows 10 Version 1909 for x86-based Systems (KB5004946) (CVE-2021-34527) |
| PATCH-31681 | 2021-07 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB5004946) (CVE-2021-34527) |
| PATCH-31677 | 2021-07 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5004947) (CVE-2021-34527) |
| PATCH-31678 | 2021-07 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5004947) (CVE-2021-34527) |
| PATCH-31679 | 2021-07 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5004947) (CVE-2021-34527) |
| PATCH-31675 | 2021-07 Cumulative Update for Windows 10 Version 1507 for x86-based Systems (KB5004950) (CVE-2021-34527) |
| PATCH-31676 | 2021-07 Cumulative Update for Windows 10 Version 1507 for x64-based Systems (KB5004950) (CVE-2021-34527) |
| PATCH-31667 | 2021-07 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB5004951) (ESU) (CVE-2021-34527) |
| PATCH-31668 | 2021-07 Security Only Quality Update for Windows 7 for x64-based Systems (KB5004951) (ESU) (CVE-2021-34527) |
| PATCH-31669 | 2021-07 Security Only Quality Update for Windows 7 for x86-based Systems (KB5004951) (ESU) (CVE-2021-34527) |
| PATCH-31690 | 2021-07 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5004953) (ESU) (CVE-2021-34527) |
| PATCH-31691 | 2021-07 Security Monthly Quality Rollup for Windows 7 for x64-based Systems (KB5004953) (ESU) (CVE-2021-34527) |
| PATCH-31692 | 2021-07 Security Monthly Quality Rollup for Windows 7 for x86-based Systems (KB5004953) (ESU) (CVE-2021-34527) |
| PATCH-31693 | 2021-07 Security Monthly Quality Rollup for Windows 8.1 for x86-based Systems (KB5004954) (CVE-2021-34527) |
| PATCH-31694 | 2021-07 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5004954) (CVE-2021-34527) |
| PATCH-31695 | 2021-07 Security Monthly Quality Rollup for Windows 8.1 for x64-based Systems (KB5004954) (CVE-2021-34527) |
| PATCH-31696 | 2021-07 Security Monthly Quality Rollup for Windows Server 2008 for x86-based Systems (KB5004955) (ESU) (CVE-2021-34527) |
| PATCH-31697 | 2021-07 Security Monthly Quality Rollup for Windows Server 2008 for x64-based Systems (KB5004955) (ESU) (CVE-2021-34527) |
| PATCH-31670 | 2021-07 Security Only Quality Update for Windows 8.1 for x86-based Systems (KB5004958) (CVE-2021-34527) |
| PATCH-31671 | 2021-07 Security Only Quality Update for Windows Server 2012 R2 for x64-based Systems (KB5004958) (CVE-2021-34527) |
| PATCH-31672 | 2021-07 Security Only Quality Update for Windows 8.1 for x64-based Systems (KB5004958) (CVE-2021-34527) |
| PATCH-31673 | 2021-07 Security Only Quality Update for Windows Server 2008 for x64-based Systems (KB5004959) (ESU) (CVE-2021-34527) |
| PATCH-31674 | 2021-07 Security Only Quality Update for Windows Server 2008 for x86-based Systems (KB5004959) (ESU) (CVE-2021-34527) |
| PATCH-31698 | 2021-07 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5004948) (CVE-2021-34527) |
| PATCH-31699 | 2021-07 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5004948) (CVE-2021-34527) |
| PATCH-31700 | 2021-07 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5004948) (CVE-2021-34527) |
| PATCH-31701 | 2021-07 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5004956) (CVE-2021-34527) |
| PATCH-31702 | 2021-07 Security Only Quality Update for Windows Server 2012 for x64-based Systems (KB5004960) (CVE-2021-34527) |
| PATCH-32083 | 2021-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5005575) (CVE-2021-40444) |
| PATCH-32364 | 2021-11 Cumulative Update for Windows 11 for x64-based Systems (KB5007215) (CVE-2021-41371) (CVE-2021-38631) |
| PATCH-34749 | 2022-10 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5018427) (CVE-2022-41033) |
| PATCH-34946 | 2022-11 Cumulative Update for Windows 10 Version 20H2 for x64-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34947 | 2022-11 Cumulative Update for Windows 10 Version 21H1 for x86-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34948 | 2022-11 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34949 | 2022-11 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34950 | 2022-11 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34951 | 2022-11 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34952 | 2022-11 Cumulative Update for Windows 10 Version 20H2 for x86-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
| PATCH-34953 | 2022-11 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5019959) (CVE-2022-41128) (CVE-2022-41091) (CVE-2022-41073) (CVE-2022-41125) (CVE-2022-44698) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234