CVE-2026-21312: Adobe Audition RCE Vulnerability

CVE-2026-21312 Overview

Adobe Audition versions 25.3 and earlier are affected by an out-of-bounds write vulnerability (CWE-787) that could result in arbitrary code execution in the context of the current user. This memory corruption flaw allows attackers to write data beyond the boundaries of allocated memory buffers, potentially enabling malicious code execution. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Critical Impact

Successful exploitation allows attackers to execute arbitrary code with the privileges of the current user, potentially leading to complete system compromise, data theft, or further lateral movement within an organization's network.

Affected Products

• Adobe Audition version 25.3 and earlier
• Adobe Audition (all versions matching cpe:2.3:a:adobe:audition:*:*:*:*:*:*:*:*)

Discovery Timeline

• 2026-02-10 - CVE-2026-21312 published to NVD
• 2026-02-11 - Last updated in NVD database

Technical Details for CVE-2026-21312

Vulnerability Analysis

This vulnerability is classified as an out-of-bounds write (CWE-787), a type of memory corruption flaw that occurs when software writes data past the end or before the beginning of an intended buffer. In the context of Adobe Audition, this vulnerability is triggered when processing a specially crafted malicious file.

The local attack vector means an attacker would need to convince a user to open a malicious audio file or project. Once the file is opened, the out-of-bounds write condition can be triggered, allowing the attacker to corrupt adjacent memory regions and potentially redirect program execution flow to attacker-controlled code.

Root Cause

The vulnerability stems from improper bounds checking during file parsing operations in Adobe Audition. When processing certain file structures or audio data, the application fails to properly validate input lengths or buffer boundaries before writing data to memory. This allows malformed input data to cause writes beyond the allocated buffer space, corrupting adjacent memory regions.

Attack Vector

Exploitation requires local access and user interaction. An attacker would typically deliver a malicious audio file (such as a specially crafted .aup3, .wav, or other supported format) via email, web download, or shared network storage. When the victim opens this file in Adobe Audition, the malicious payload triggers the out-of-bounds write condition.

The attack flow typically involves:

1. Attacker crafts a malicious audio file with specially designed metadata or audio data structures
2. File is delivered to the victim through social engineering or targeted campaigns
3. Victim opens the file in a vulnerable version of Adobe Audition
4. The parsing routine triggers the out-of-bounds write, corrupting memory
5. Attacker gains code execution in the context of the current user

For detailed technical information about this vulnerability, refer to the Adobe Security Advisory APSB26-14.

Detection Methods for CVE-2026-21312

Indicators of Compromise

• Unexpected crashes of Adobe Audition when opening specific audio files
• Unusual child processes spawned by Adobe Audition.exe
• Suspicious network connections initiated by the Audition process
• Abnormal memory consumption or access violations in system logs

Detection Strategies

• Monitor for Adobe Audition process launching unexpected child processes or shell commands
• Deploy endpoint detection rules to identify memory corruption patterns associated with out-of-bounds writes
• Implement file integrity monitoring for unusual audio file attributes or oversized metadata sections
• Use SentinelOne's behavioral AI to detect exploitation attempts through anomalous process behavior

Monitoring Recommendations

• Enable verbose logging for Adobe Creative Cloud applications
• Monitor user download directories and email attachments for suspicious audio files
• Configure alerting for unusual process chains originating from Adobe Audition
• Review Windows Event Logs for application crashes or access violations related to Audition

How to Mitigate CVE-2026-21312

Immediate Actions Required

• Update Adobe Audition to the latest patched version immediately
• Exercise caution when opening audio files from untrusted sources
• Implement application whitelisting to prevent unauthorized code execution
• Consider temporarily disabling or restricting Adobe Audition access until patching is complete

Patch Information

Adobe has released a security patch addressing this vulnerability as documented in Adobe Security Advisory APSB26-14. Users should update to the latest version of Adobe Audition through the Adobe Creative Cloud application or by downloading the update directly from Adobe's website.

Workarounds

• Avoid opening audio files from untrusted or unknown sources
• Use sandboxed environments or virtual machines when processing files from external parties
• Implement strict email filtering to block potentially malicious audio file attachments
• Configure network security controls to prevent automatic file downloads from untrusted domains