CVE-2026-21350 Overview
CVE-2026-21350 is a NULL Pointer Dereference vulnerability affecting Adobe After Effects versions 25.6 and earlier. This vulnerability could allow an attacker to cause a denial-of-service condition by crashing the application when a user opens a specially crafted malicious file. The vulnerability requires user interaction, making social engineering tactics a likely attack vector.
Critical Impact
Successful exploitation of this vulnerability can disrupt creative workflows by crashing Adobe After Effects, causing loss of unsaved work and interruption of production environments.
Affected Products
- Adobe After Effects versions 25.6 and earlier
- Affected on Apple macOS platforms
- Affected on Microsoft Windows platforms
Discovery Timeline
- 2026-02-10 - CVE CVE-2026-21350 published to NVD
- 2026-02-11 - Last updated in NVD database
Technical Details for CVE-2026-21350
Vulnerability Analysis
This vulnerability is classified as CWE-476 (NULL Pointer Dereference), a memory corruption flaw where the application attempts to use a pointer that is expected to reference a valid memory location but instead points to NULL. When Adobe After Effects processes a maliciously crafted file, it fails to properly validate pointer references before dereferencing them, leading to an application crash.
The attack requires local access and user interaction—specifically, a victim must be convinced to open a malicious file. This typically occurs through phishing campaigns where attackers distribute seemingly legitimate After Effects project files (.aep) or other supported media formats containing the malicious payload.
Root Cause
The vulnerability stems from insufficient validation of pointer references within Adobe After Effects file parsing routines. When the application processes certain file structures, it assumes pointers reference valid memory without first verifying they are not NULL. This oversight allows specially crafted input to trigger a dereference operation on a NULL pointer, immediately causing the application to terminate unexpectedly.
Attack Vector
The attack vector is local, requiring an attacker to deliver a malicious file to the target system. Common delivery mechanisms include:
- Email attachments disguised as legitimate After Effects projects
- Compromised asset libraries or template repositories
- Malicious files shared through collaboration platforms
- Fake downloads on third-party websites posing as stock footage or templates
When the victim opens the crafted file in After Effects, the NULL pointer dereference occurs during file parsing, causing an immediate application crash without warning.
Detection Methods for CVE-2026-21350
Indicators of Compromise
- Unexpected Adobe After Effects crash events coinciding with opening recently downloaded or externally received files
- Crash dump files showing NULL pointer dereference exceptions within After Effects processes
- User reports of application crashes when opening specific project files from external sources
Detection Strategies
- Monitor application crash logs for After Effects with exception codes indicating NULL pointer access violations
- Implement file scanning solutions to analyze After Effects project files from untrusted sources before opening
- Deploy endpoint detection rules to alert on repeated After Effects crashes in short time windows
Monitoring Recommendations
- Enable Windows Error Reporting or macOS crash reporting to capture detailed crash diagnostics
- Correlate After Effects crash events with recent file download activity in SIEM platforms
- Review email gateway logs for attachments matching After Effects file extensions from suspicious senders
How to Mitigate CVE-2026-21350
Immediate Actions Required
- Update Adobe After Effects to the latest version beyond 25.6 as recommended in Adobe's security bulletin
- Advise users to avoid opening After Effects files from untrusted or unknown sources
- Implement email filtering rules to quarantine After Effects project file attachments for manual review
Patch Information
Adobe has released a security update addressing this vulnerability. Refer to the Adobe Security Advisory APSB26-15 for official patch information and download instructions. Users should update to the latest available version of After Effects to remediate this vulnerability.
Workarounds
- Establish organizational policies restricting the opening of After Effects files received from external parties
- Use sandboxed environments or virtual machines when opening project files from untrusted sources
- Enable application allow-listing to prevent execution of unauthorized files that could be used in attack chains
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
