Adobe has released an optional hotfix for Adobe Reader for Windows and macOS that addresses an important bug fix.
Release date: February 22, 2020
Vulnerability identifier: None
Platform: Windows and MacOS
Bug Fix:Security-Signatures
- 4324888: An error message is incorrectly displayed and associated with a valid digital signature.
Release Notes (https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/continuous/dccontinuousfeb2021qfe2.html#dccontinuousfebtwentytwentyoneqfe2)