CVE-2016-1055: Use-after-free vulnerability in Adobe Reader and Acrobat before 11.0.16, Acrobat and Acrobat Reader DC Clas...

Security readout for executives and security teams

CVE-2016-1055 is a memory safety flaw in Adobe Reader and Acrobat. On affected Windows and OS X systems, it could allow attacker-controlled code to run through unspecified vectors. The business concern is legacy endpoints that still open documents with unpatched Adobe Reader or Acrobat versions from before the May 2016 security update. Exposure is most likely on unmanaged or legacy Windows and OS X endpoints running the named Adobe versions. Modern managed fleets are less likely exposed if Adobe Reader and Acrobat have been updated since APSB16-14. Treat this as a high-priority legacy software cleanup issue, especially for document-heavy teams. The vulnerability enables code execution, but the provided evidence does not show confirmed active exploitation. Mitigation focus: Upgrade Adobe Reader and Acrobat to versions fixed by APSB16-14 or later.; Remove unsupported legacy Adobe Reader or Acrobat installations from endpoints.; Prioritize systems that handle external PDFs or other untrusted documents..

Prepared

Jun 13, 2026, 14:44 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.