CVE-2026-47927: Adobe DNG SDK Out-of-Bounds Read Information Disclosure

Technical summary

CVE-2026-47927 is an out-of-bounds read vulnerability in Adobe DNG SDK versions 1.7.1 (build 2536) and earlier. The vulnerability stems from improper bounds checking when the SDK processes DNG image data, allowing an attacker to read adjacent memory regions during file parsing. The vulnerability is classified as CWE-125 (Out-of-bounds Read). The CVSS 3.1 score of 5.5 reflects local exploitation requiring user interaction, with high confidentiality impact but no integrity or availability consequences. The attack vector is local, access complexity is low, and no privileges are required—only that a user opens a malicious file.

Business impact

The primary risk is information disclosure. Organizations that use DNG SDK in their applications—particularly those in photography, design, asset management, or DAM (Digital Asset Management) workflows—face potential exposure of sensitive data resident in process memory. This could include user credentials, session tokens, API keys, or proprietary image metadata. Breach of such information can lead to lateral movement, credential stuffing, or further compromise. The requirement for user interaction means phishing campaigns targeting designers, photographers, or editors could be a viable attack vector.

Affected systems

All deployments of Adobe DNG SDK versions 1.7.1 (build 2536) and earlier are affected. This includes any application or service that embeds or uses the DNG SDK for image processing. Organizations should inventory any custom applications, plugins, or third-party software that rely on DNG SDK functionality. Adobe's own tools (such as Lightroom Classic, Camera Raw, or other Creative Cloud applications) that bundle vulnerable SDK versions are also in scope.

Exploitability

Exploitability is moderate. The vulnerability requires user interaction—specifically, a victim must open a crafted malicious DNG file. This is not a network-based, unauthenticated, or zero-click attack. However, the ease of delivering malicious image files via email, file-sharing platforms, or compromised websites makes social engineering viable. Once a user opens the file, the out-of-bounds read occurs automatically without additional prompts or actions. The attack does not require elevated privileges or special system configuration.

Remediation

Upgrade Adobe DNG SDK to a version released after the 1.7.1 build 2536 baseline. Organizations should identify all applications and services that depend on DNG SDK and apply vendor patches according to the vendor's advisory timeline. For Adobe products, check Adobe's security bulletins for patched versions. Custom applications should be updated and redeployed. Until patching is complete, consider restricting DNG file handling to trusted sources and educating users about the risks of opening unsolicited image files.

Patch guidance

Monitor Adobe's official security advisories and product release notes for patched DNG SDK versions. Apply updates to all affected applications, including both Adobe-supplied tools and custom or third-party software that embeds DNG SDK. Test patches in a non-production environment before rolling out to ensure compatibility with your image processing workflows. For in-house developed applications using DNG SDK, verify the static SDK version in use against Adobe's vulnerability disclosure and upgrade to a fixed release.

Detection guidance

Monitor for unusual memory access patterns or crashes in DNG SDK processing (look for access violations or segmentation faults in logs). Endpoint Detection and Response (EDR) tools can flag suspicious DNG file handling, particularly files originating from untrusted sources or with unexpected metadata. Web proxies and email gateways should scrutinize DNG file attachments and downloads. File integrity monitoring on DNG SDK libraries can detect unauthorized modifications. Log analysis for file open events on DNG-processing applications may reveal attempts to open malicious files, though benign DNG processing will also trigger these logs.

Why prioritize this

Although the CVSS score is medium (5.5), prioritization depends on your organization's exposure. If you operate photography tools, asset management systems, or design applications that use DNG SDK, this warrants prompt remediation because information disclosure can precede more serious attacks. Organizations with no DNG SDK dependencies can safely deprioritize. The lack of active exploitation in the wild (not listed on CISA KEV) and the requirement for user interaction reduce urgency compared to critical, remotely exploitable flaws. Nevertheless, information disclosure vulnerabilities often persist unpatched longer than integrity or availability issues, making early action prudent.

Risk score, explained

The CVSS 3.1 score of 5.5 (MEDIUM) reflects a local attack vector, low complexity, no privilege requirement, and user interaction needed, combined with high confidentiality impact but no integrity or availability impact. This is a classic information disclosure vulnerability. The score appropriately captures that memory contents are exposed but the system itself remains functional. In your risk model, this should be weighted against the sensitivity of data that could reside in memory for your applications and the likelihood that attackers will target users in your organization with malicious DNG files.

Frequently asked questions