CVE-2026-21313: Adobe Audition Information Disclosure Bug

CVE-2026-21313 Overview

Adobe Audition versions 25.3 and earlier contain an out-of-bounds read vulnerability (CWE-125) that could lead to unauthorized memory exposure. This vulnerability allows an attacker to potentially disclose sensitive information stored in application memory. Successful exploitation requires user interaction, specifically that a victim must open a malicious file crafted by the attacker.

Critical Impact

An attacker could leverage this vulnerability to read beyond allocated memory boundaries, potentially exposing sensitive data, credentials, or other confidential information stored in memory.

Affected Products

• Adobe Audition version 25.3 and earlier
• Adobe Audition (all versions prior to the security patch)

Discovery Timeline

• 2026-02-10 - CVE-2026-21313 published to NVD
• 2026-02-11 - Last updated in NVD database

Technical Details for CVE-2026-21313

Vulnerability Analysis

This vulnerability is classified as an out-of-bounds read (CWE-125), a memory corruption vulnerability where the application reads data past the end or before the beginning of the intended buffer. In the context of Adobe Audition, this flaw occurs during the processing of specially crafted media files.

The attack vector is local, meaning the attacker must deliver a malicious file to the victim's system, and the victim must actively open the file using Adobe Audition. While this requires user interaction, the barrier to exploitation is relatively low given the common practice of sharing audio files in professional and personal contexts.

The vulnerability specifically impacts confidentiality, as attackers can extract memory contents that may include sensitive information such as application data, user credentials, encryption keys, or fragments of previously processed files that remain in memory.

Root Cause

The root cause of CVE-2026-21313 lies in improper bounds checking when Adobe Audition processes certain file structures. When parsing malformed input, the application fails to properly validate buffer boundaries before reading data, allowing read operations to access memory locations outside the intended allocation.

This type of vulnerability typically occurs when:

• Array indices or pointer arithmetic calculations are not properly validated
• Length fields in file formats are trusted without verification
• Memory allocation sizes don't match the actual data being processed

Attack Vector

The attack requires local access and user interaction. An attacker would typically:

1. Craft a malicious audio file with manipulated header fields or data structures designed to trigger the out-of-bounds read condition
2. Distribute the malicious file through email attachments, file sharing services, or compromised download sources
3. Social engineer the victim into opening the file with Adobe Audition
4. Upon parsing the malicious file, Audition reads memory beyond the intended buffer boundaries
5. The attacker can potentially recover the leaked memory contents through various side-channel techniques or embedded within application behavior

The vulnerability manifests during file parsing operations in Adobe Audition. When the application encounters a maliciously crafted file, it attempts to read data based on untrusted length or offset values, resulting in out-of-bounds memory access. For detailed technical information, refer to the Adobe Security Advisory APSB26-14.

Detection Methods for CVE-2026-21313

Indicators of Compromise

• Unusual Adobe Audition crash reports or exceptions during file operations
• Detection of malformed audio files with anomalous header structures
• Memory access violations or segmentation faults in Audition process logs
• Suspicious audio files from untrusted sources with unusual file characteristics

Detection Strategies

• Deploy endpoint detection and response (EDR) solutions to monitor Adobe Audition process behavior for anomalous memory access patterns
• Implement file integrity monitoring to detect potentially malicious audio files before they are processed
• Configure application crash reporting to capture and analyze Audition crashes that may indicate exploitation attempts
• Use SentinelOne's behavioral AI to detect memory disclosure attempts and abnormal application behavior

Monitoring Recommendations

• Monitor Adobe Audition process memory access patterns for out-of-bounds read attempts
• Alert on Adobe Audition processing files from untrusted or external sources
• Track and review application event logs for memory-related errors in Audition
• Implement network monitoring to detect exfiltration of potentially leaked sensitive data

How to Mitigate CVE-2026-21313

Immediate Actions Required

• Update Adobe Audition to the latest patched version as specified in APSB26-14
• Implement application whitelisting to restrict file sources that can be opened in Audition
• Educate users about the risks of opening audio files from untrusted sources
• Consider temporarily restricting Adobe Audition usage until patches are applied

Patch Information

Adobe has released a security update addressing this vulnerability as documented in Adobe Security Advisory APSB26-14. Organizations should prioritize applying the update to all systems running Adobe Audition version 25.3 or earlier.

Workarounds

• Avoid opening audio files from untrusted or unknown sources until the patch is applied
• Implement network segmentation to limit the impact of potential information disclosure
• Use sandboxed environments or virtual machines when processing audio files from external sources
• Configure email gateways to quarantine or scan suspicious audio file attachments

# Verify Adobe Audition version on Windows
# Navigate to Help > About Adobe Audition to check version
# Or check via registry/installation directory

# Recommended: Use Adobe Creative Cloud to update to the latest version
# Open Creative Cloud Desktop App and check for updates to Adobe Audition