CVE-2026-47963 Overview
CVE-2026-47963 is an out-of-bounds read vulnerability in Adobe Digital Negative (DNG) Software Development Kit (SDK) versions 1.7.1 2536 and earlier. The flaw allows an attacker to read memory outside the bounds of an allocated buffer, leading to disclosure of sensitive process memory. Exploitation requires user interaction: a victim must open a crafted DNG file processed by the vulnerable SDK. The issue is tracked under [CWE-125: Out-of-bounds Read].
Critical Impact
Successful exploitation discloses sensitive memory contents from the host process, which attackers can use to bypass mitigations such as Address Space Layout Randomization (ASLR) or to harvest secrets.
Affected Products
- Adobe DNG SDK version 1.7.1 2536
- Adobe DNG SDK versions earlier than 1.7.1 2536
- Applications that embed the vulnerable DNG SDK to parse Digital Negative image files
Discovery Timeline
- 2026-06-16 - CVE-2026-47963 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2026-47963
Vulnerability Analysis
The vulnerability resides in the DNG SDK's parsing of Digital Negative image files. When the SDK processes a malformed DNG file, it reads beyond the boundary of an allocated buffer. This out-of-bounds read returns adjacent memory contents to the calling process, where they can be reflected back to the attacker through error metadata, decoded pixel data, or other observable output channels.
The attack surface is the file-parsing path of any host application that links the DNG SDK. Because DNG is a container for raw camera data, parsers handle multiple tag types, offsets, and length fields, each of which must be validated against the actual file size and allocation extents. A single missing bounds check is sufficient to trigger the condition.
The outcome is information disclosure rather than code execution. However, memory disclosure often serves as a primitive in multi-stage exploits, leaking pointers needed to defeat ASLR before a separate memory corruption bug is used to achieve execution.
Root Cause
The root cause is improper validation of an input-controlled size or offset value during DNG file parsing, classified as [CWE-125]. The SDK trusts a length or index derived from attacker-controlled file structures and reads memory at locations beyond the allocated object.
Attack Vector
The attack vector is local and requires user interaction. An attacker delivers a crafted DNG file through email, messaging, web download, or shared storage. The victim opens the file in an application that uses the vulnerable DNG SDK. The application reads out-of-bounds memory and may expose that memory through rendered output, logs, or returned data structures. No elevated privileges are required on the victim host.
No verified public proof-of-concept is described in the source advisory, and no code example is reproduced here. See the Adobe Security Advisory APSB26-67 for vendor technical details.
Detection Methods for CVE-2026-47963
Indicators of Compromise
- Unexpected DNG, TIFF, or raw image files arriving via email attachments, chat platforms, or untrusted web downloads on workstations that run image processing applications.
- Application crashes, hangs, or memory access errors logged by host applications immediately after opening a DNG file.
- Outbound transmission of image processing application data following the opening of an externally sourced DNG file.
Detection Strategies
- Inspect DNG file headers and Image File Directory (IFD) structures at email and web gateways for malformed offsets or length fields that exceed file size.
- Monitor endpoint telemetry for image processing or photo editing applications spawning unexpected child processes or making unusual network connections after opening media files.
- Correlate file-open events for DNG files from untrusted sources with subsequent process anomalies on the same host.
Monitoring Recommendations
- Enable detailed process and file-access logging on workstations used by photography, prepress, and forensic imaging teams.
- Track installed versions of DNG SDK-based applications across the fleet and alert when versions match 1.7.1 2536 or earlier.
- Forward image application crash dumps to a central analysis pipeline to identify recurring out-of-bounds read patterns.
How to Mitigate CVE-2026-47963
Immediate Actions Required
- Inventory all applications and internal tools that link the Adobe DNG SDK and identify those running version 1.7.1 2536 or earlier.
- Apply the fixed DNG SDK release identified in the Adobe Security Advisory APSB26-67 and rebuild dependent applications.
- Instruct users to avoid opening DNG files received from untrusted sources until patched builds are deployed.
Patch Information
Adobe has published guidance and fixed-version information in Adobe Security Advisory APSB26-67. Software vendors that statically link the DNG SDK must rebuild their applications against the patched SDK release and redistribute updates to end users. Operating system package managers will not transparently fix embedded SDK copies.
Workarounds
- Block inbound DNG attachments at email gateways for user populations that do not require raw image processing.
- Restrict opening of DNG files to a dedicated, network-isolated workstation or sandboxed application instance until patches are applied.
- Use application allowlisting to prevent untrusted image processing tools from being installed on endpoints that handle sensitive data.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
