CVE-2021-21017: Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability

Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability (CWE-122) that could enable unauthenticated attackers to execute arbitrary code in the context of the current user. The vulnerability has been observed to be exploited in the wild, indicating active threat. No explicit details on affected versions or patch availability are provided in the source data.

Successful exploitation allows code execution with the privileges of the current user, potentially leading to system compromise or unauthorized actions. The vulnerability is actively exploited in the wild, increasing the risk to users of affected Adobe Acrobat and Reader installations.

Patch status is not yet confirmed — check the Adobe vendor advisory for current remediation guidance. Until official patches or mitigations are confirmed, users should exercise caution when opening untrusted documents and consider applying any available security updates from Adobe.