CVE-2026-47934 Overview
CVE-2026-47934 is an out-of-bounds read vulnerability [CWE-125] affecting Adobe Digital Negative Software Development Kit (DNG SDK) versions 1.7.1 2536 and earlier. The flaw allows an attacker to read memory outside the bounds of an allocated buffer, potentially exposing sensitive process memory. Exploitation requires user interaction. A victim must open a crafted malicious DNG file using an application that links against the vulnerable SDK. Successful exploitation results in disclosure of sensitive information from the affected process. The vulnerability does not impact integrity or availability.
Critical Impact
An attacker can disclose sensitive memory contents from applications using the DNG SDK by tricking a user into opening a malicious raw image file.
Affected Products
- Adobe DNG SDK version 1.7.1 2536
- All prior versions of the Adobe DNG SDK
- Third-party applications that embed the vulnerable DNG SDK for raw image processing
Discovery Timeline
- 2026-06-16 - CVE-2026-47934 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2026-47934
Vulnerability Analysis
The vulnerability is an out-of-bounds read classified under [CWE-125]. The DNG SDK parses Digital Negative (.dng) raw image files, which contain complex tagged metadata structures and image payload data. When the SDK processes a malformed DNG file, it reads memory beyond the boundary of an allocated buffer.
The out-of-bounds read returns adjacent process memory to attacker-controlled parsing logic. That memory can contain pointers, heap metadata, credentials, or other in-process secrets. An attacker can use the disclosed bytes to bypass Address Space Layout Randomization (ASLR) or to harvest sensitive data directly.
Exploitation is local and requires user interaction. The attacker delivers a malicious .dng file through email, web download, or other transport. The victim opens the file in an application that uses the vulnerable SDK to trigger the read.
Root Cause
The root cause is insufficient bounds checking during parsing of attacker-controlled fields within the DNG file format. The SDK trusts size or offset values embedded in the file without validating them against the actual size of the allocated buffer. Refer to the Adobe Security Advisory APSB26-67 for vendor technical details.
Attack Vector
The attack vector is local and file-based. An attacker crafts a malformed DNG raw image and delivers it to the victim. When the victim opens the file in a host application that uses the DNG SDK for decoding, the parser reads beyond the intended buffer boundary. The leaked data can be encoded back into the rendered image, returned through application telemetry, or extracted through subsequent exploitation chains.
No verified public proof-of-concept code is available. See the Adobe Security Advisory APSB26-67 for further technical context.
Detection Methods for CVE-2026-47934
Indicators of Compromise
- Unexpected .dng files originating from untrusted sources, email attachments, or web downloads
- Application crashes or abnormal memory access patterns in processes that load the DNG SDK
- Host applications spawning unusual child processes immediately after opening a raw image file
Detection Strategies
- Inventory all software in the environment that bundles the Adobe DNG SDK and confirm SDK version 1.7.1 2536 or earlier
- Inspect inbound email and web traffic for .dng attachments from external senders and quarantine for analysis
- Apply file-format validation through sandboxed preprocessing before opening raw images in production workstations
Monitoring Recommendations
- Monitor endpoint telemetry for image-processing applications reading large or unusual memory regions while parsing .dng files
- Alert on crashes, exceptions, or Windows Error Reporting events from photo editing and raw image applications
- Track file creation and execution events involving DNG files originating from Downloads, Temp, or email client directories
How to Mitigate CVE-2026-47934
Immediate Actions Required
- Update the Adobe DNG SDK to the fixed version identified in Adobe Security Advisory APSB26-67
- Rebuild and redistribute any in-house applications that statically link against the vulnerable SDK
- Instruct users to avoid opening .dng files from untrusted senders or unknown websites
Patch Information
Adobe addressed CVE-2026-47934 in the update published in Adobe Security Advisory APSB26-67. Software vendors that embed the DNG SDK must integrate the patched version and ship updated builds to their customers. Verify the SDK version reported by host applications after deployment.
Workarounds
- Block delivery of .dng attachments at the email gateway until patched versions are deployed
- Restrict the use of raw image processing applications to isolated or sandboxed workstations
- Apply application allowlisting to prevent untrusted DNG files from being opened by vulnerable software
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
