After Effects versions 25.6 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

The version of Adobe After Effects installed on the remote Windows host is prior to 25.6.4. It is, therefore, affected by multiple vulnerabilities as referenced in the APSB26-15 advisory.

  - Use After Free (CWE-416) potentially leading to Arbitrary code execution (CVE-2026-21320, CVE-2026-21323,     CVE-2026-21326, CVE-2026-21329, CVE-2026-21351)

  - Out-of-bounds Write (CWE-787) potentially leading to Arbitrary code execution (CVE-2026-21318,     CVE-2026-21327, CVE-2026-21328)

  - Integer Overflow or Wraparound (CWE-190) potentially leading to Arbitrary code execution (CVE-2026-21321)

  - Out-of-bounds Read (CWE-125) potentially leading to Arbitrary code execution (CVE-2026-21322,     CVE-2026-21324, CVE-2026-21325)

  - Access of Resource Using Incompatible Type ('Type Confusion') (CWE-843) potentially leading to Arbitrary     code execution (CVE-2026-21330)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Adobe After Effects installed on the remote macOS host is prior to 25.6.4. It is, therefore, affected by multiple vulnerabilities as referenced in the APSB26-15 advisory.

  - Use After Free (CWE-416) potentially leading to Arbitrary code execution (CVE-2026-21320, CVE-2026-21323,     CVE-2026-21326, CVE-2026-21329, CVE-2026-21351)

  - Out-of-bounds Write (CWE-787) potentially leading to Arbitrary code execution (CVE-2026-21318,     CVE-2026-21327, CVE-2026-21328)

  - Integer Overflow or Wraparound (CWE-190) potentially leading to Arbitrary code execution (CVE-2026-21321)

  - Out-of-bounds Read (CWE-125) potentially leading to Arbitrary code execution (CVE-2026-21322,     CVE-2026-21324, CVE-2026-21325)

  - Access of Resource Using Incompatible Type ('Type Confusion') (CWE-843) potentially leading to Arbitrary     code execution (CVE-2026-21330)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
298522	Adobe After Effects < 25.6.4 Multiple Vulnerabilities (APSB26-15)	Nessus	Windows	Local	high
298521	Adobe After Effects < 25.6.4 Multiple Vulnerabilities (APSB26-15) (macOS)	Nessus	MacOS X Local Security Checks	Local	high

Detections

Analytics

CVE-2026-21351

high

Tenable Plugins

high

high