# CVE-2026-21354: Adobe DNG SDK integer overflow in file parsing

Source: https://junglewise.ai/threats/cve-2026-21354-adobe-dng-sdk-integer-overflow-in-file-parsing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-10. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-21354 · Severity: medium · CVSS 5.5 · Published 2026-02-10

Adobe DNG SDK is a library used by developers to read and process Digital Negative (DNG) image files. An integer overflow vulnerability allows an attacker to craft a malicious DNG file that, when opened by an application using the SDK, causes the application to crash or become unresponsive. This impacts any software built on top of the DNG SDK, potentially disrupting user workflows and creating denial-of-service conditions.

Technologies: [Adobe DNG SDK](https://junglewise.ai/threats/technologies/dng-sdk), [Adobe Dng Software Development Kit](https://junglewise.ai/threats/technologies/dng-software-development-kit). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-21354 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21354 being exploited in the wild.

**How severe is CVE-2026-21354?** Medium severity, with a CVSS score of 5.5, published 10 February 2026.

**Which products and versions are affected?** Adobe DNG SDK 1.7.1 2410 and earlier.

**Is there a fix for CVE-2026-21354?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-21354 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-21354?** Check whether you run Adobe DNG SDK or Adobe Dng Software Development Kit at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an integer overflow or wraparound in DNG SDK version 1.7.1 2410 and earlier, occurring during file parsing. The root cause involves improper bounds checking when processing numeric fields in DNG image files. The attack requires user interaction—a victim must open a specially crafted malicious DNG file in an affected application. Successful exploitation leads to application denial-of-service (crash or hang), but does not enable code execution or data access. Adobe has released patches to address this issue in newer SDK versions.

## Affected products

- Adobe DNG SDK 1.7.1 2410 and earlier

## Timeline

- 2026-02-10: disclosed

## References

- [https://helpx.adobe.com/security/products/dng-sdk/apsb26-23.html](https://helpx.adobe.com/security/products/dng-sdk/apsb26-23.html)

## Related threats

- [Adobe DNG SDK out-of-bounds write in image parsing](https://junglewise.ai/threats/cve-2026-34620-adobe-dng-sdk-out-of-bounds-write-in-image-parsing)
- [Adobe DNG SDK out-of-bounds read in image processing](https://junglewise.ai/threats/cve-2026-34616-adobe-dng-sdk-out-of-bounds-read-in-image-processing)
- [Adobe DNG SDK stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-48389-adobe-dng-sdk-stack-based-buffer-overflow)
- [Adobe DNG SDK NULL pointer dereference denial of service](https://junglewise.ai/threats/cve-2026-48267-adobe-dng-sdk-null-pointer-dereference-denial-of-service)
- [Adobe DNG SDK heap overflow in file processing](https://junglewise.ai/threats/cve-2026-47964-adobe-dng-sdk-heap-overflow-in-file-processing)