Exploit-CVE-2021-21086

Exploit for CVE-2021-21086. CVSS 7.8.

Published 29 Sep 2026Updated 29 Sep 2026147 sources
CVSS 7.8 PoC CANDIDATE

What happened

Shellcode execution in Adobe Acrobat Reader DC 2020.013.20074 rendering process via charstring.

Affected versions

Unknown product: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references