Issued: Wednesday, 29 September, 2021 |
Last Revision: Wednesday, 29 September, 2021 |
Vendor: |
Product: |
Severity Level: |
Adobe has released security update to address the multiple Critical and Important vulnerabilities affecting both Windows and macOS for Adobe Acrobat and Reader. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Organizations are advised to apply patches as soon as possible, particularly patches for critical and important vulnerabilities.
CVE | Description | CVSS3.0 Score |
CVE-2021-39841 | Arbitrary code execution | 7.8 |
CVE-2021-39863 | Arbitrary code execution | 8.8 |
CVE-2021-39844 | Memory Leak | 7.7 |
CVE-2021-39843 | Memory Leak | 7.8 |
CVE-2021-39846 CVE-2021-39845 | Arbitrary code execution | 7.7 |
CVE-2021-39840 CVE-2021-39842 CVE-2021-39839 CVE-2021-39838 CVE-2021-39837 CVE-2021-39836 | Arbitrary code execution | 7.8 |
CVE-2021-39852 | Application denial-of-service | 7.2 |
Table 1: Vulnerability details
Product | Track | Affected Versions | Platform |
Acrobat DC | Continuous
| 2021.005.20060 and earlier versions | Windows |
Acrobat Reader DC | Continuous | 2021.005.20060 and earlier versions | Windows |
Acrobat DC | Continuous
| 2021.005.20058 and earlier versions | macOS |
Acrobat Reader DC | Continuous
| 2021.005.20058 and earlier versions | macOS |
Acrobat 2020 | Classic 2020 | 2020.004.30006 and earlier versions | Windows & macOS |
Acrobat Reader 2020 | Classic 2020 | 2020.004.30006 and earlier versions | Windows & macOS |
Acrobat 2017 | Classic 2017 | 2017.011.30199 and earlier versions | Windows & macOS |
Acrobat Reader 2017 | Classic 2017 | 2017.011.30199 and earlier versions | Windows & macOS |
Table 2: Vulnerable versions
Adobe recommends users update their software installations to the newest versions by following the instructions below.
The latest product versions are available to end users via one of the following methods:
- Users can update their product installations manually by choosing Help > Check for Updates.
- The products will update automatically, without requiring user intervention, when updates are detected.
- The full Acrobat Reader installer can be downloaded from the Acrobat Reader Download Center.
For IT administrators (managed environments):
- Refer to the specific release note version for links to installers.
- Install updates via your preferred methodology, such as AIP-GPO, bootstrapper, SCUP/SCCM (Windows), or on macOS, Apple Remote Desktop and SSH.