After the critical update two weeks ago, Adobe has now released another update out of line for its PDF programs Acrobat and Reader. Overall, the update closes 85 different vulnerabilities, many of which are again classified as critical. As is customary with such updates, Adobe recommends that users update the software as soon as possible. So far, according to Adobe, no acute attacks on the gaps are known, but experience shows that the exposed position of the PDF reader often causes this to change very soon.
The updates affect the Windows and macOS versions of the software. Anyone who uses the Continuous Edition of Acrobat DC and Acrobat Reader DC should make sure that the version 2019.008.20071 of the software is installed to be on the safe side. Users of Acrobat 2017 and Acrobat Reader DC 2017 should upgrade to version 2017.011.30105. Acrobat DC and Acrobat Reader DC in the Classic 2015 edition should be updated to version 2015.006.30456. More information can be found, as usual, at Adobe in the security message APSB18-30.
Since criminals often try to accuse victims of pirated PDF files, which then install a Trojan on the system, PDF programs are often attacked. Therefore, it is important to eliminate security holes in software of this kind as soon as possible. Alone relying on antivirus programs when defending ends with acute attack waves unfortunately even with an infection of the system, if the virus scanner was not timely supplied with current signatures.