Memory disclosure via annotation out-of-bounds read

Out-of-bounds read in Adobe Acrobat Reader DC allows attackers to disclose process memory by opening a crafted PDF file. The annotation parser reads past the end of an allocated memory structure when handling malicious file data, enabling disclosure that can bypass mitigations such as ASLR. Exploitation requires a victim to open the attacker-provided document; the documented impact is information disclosure rather than code execution or service interruption.