# CVE-2026-103856: Adobe FrameMaker out-of-bounds read in memory parsing

Source: https://junglewise.ai/threats/cve-2026-103856-adobe-framemaker-is-affected-by-an-out-of-bounds-read  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-103856 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Adobe FrameMaker, a document authoring and publishing tool, is affected by an out-of-bounds read vulnerability that allows attackers to access sensitive data held in memory. An attacker could exploit this by tricking a user into opening a malicious document file, leading to exposure of confidential information stored in the application's memory.

Technologies: [Adobe FrameMaker 2022](https://junglewise.ai/threats/technologies/framemaker-2022), [Adobe FrameMaker 2026](https://junglewise.ai/threats/technologies/framemaker-2026). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-103856 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103856 being exploited in the wild.

**How severe is CVE-2026-103856?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

**Which products and versions are affected?** Adobe FrameMaker 2022 17.0.9.866 and earlier; Adobe FrameMaker 2026 18.0.0.206 and earlier.

**Is there a fix for CVE-2026-103856?** Yes: fixed in FrameMaker 2026 18.0.1.312; FrameMaker 2022 17.0.10.928. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103856 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2026-103856?** Check whether you run Adobe FrameMaker 2022 or Adobe FrameMaker 2026 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.

## How to fix

- Fixed in FrameMaker 2026 18.0.1.312; FrameMaker 2022 17.0.10.928

## Technical details

CVE-2026-103856 is an out-of-bounds read vulnerability (CWE-125) in Adobe FrameMaker that discloses sensitive memory contents. The vulnerability requires local file interaction—a victim must open a crafted malicious file—and does not require elevated privileges or user interaction beyond opening the file. An attacker gains access to memory contents including potentially sensitive data.

## Affected products

- Adobe FrameMaker 2026 18.0.0.206 and earlier
- Adobe FrameMaker 2022 17.0.9.866 and earlier

## Timeline

- 2026-10-13: disclosed

## References

- [https://www.adobe.com/trust/security/products/framemaker/apsb26-172.html](https://www.adobe.com/trust/security/products/framemaker/apsb26-172.html)

## Related threats

- [Adobe FrameMaker heap-based buffer overflow leading to code execution](https://junglewise.ai/threats/cve-2026-104344-adobe-framemaker-is-affected-by-a-heap-based-buffer-overflow)
- [Adobe FrameMaker NULL pointer dereference denial of service](https://junglewise.ai/threats/cve-2026-104343-adobe-framemaker-is-affected-by-a-null-pointer-dereference)
- [Adobe FrameMaker use-after-free vulnerability in memory handling](https://junglewise.ai/threats/cve-2026-104342-adobe-framemaker-is-affected-by-a-use-after-free-vulnerability)
- [Adobe FrameMaker out-of-bounds write vulnerability](https://junglewise.ai/threats/cve-2026-104341-adobe-framemaker-is-affected-by-an-out-of-bounds-write)
- [Adobe FrameMaker heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-104340-adobe-framemaker-is-affected-by-a-heap-based-buffer-overflow)