# CVE-2026-104340: Adobe FrameMaker heap-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-104340-adobe-framemaker-is-affected-by-a-heap-based-buffer-overflow  
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-2026-104340 · Severity: high · CVSS 7.8 · Published 2026-10-13

Adobe FrameMaker is document creation and publishing software used by technical authors. A heap-based buffer overflow vulnerability in the application could allow an attacker to execute arbitrary code on a victim's computer if they open a specially crafted malicious file. This could lead to complete system compromise, data theft, or ransomware installation.

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-2026-104340 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-104340 being exploited in the wild.

**How severe is CVE-2026-104340?** High severity, with a CVSS score of 7.8, 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-2026-104340?** 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-2026-104340 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-104340?** 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

The vulnerability is a heap-based buffer overflow (CWE-122) in Adobe FrameMaker that allows arbitrary code execution. Exploitation requires user interaction: a victim must open a malicious file. The attack vector is local with no privileges required, but it does depend on user action to trigger the vulnerability.

## 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 out-of-bounds write vulnerability](https://junglewise.ai/threats/cve-2026-103967-adobe-framemaker-is-affected-by-an-out-of-bounds-write)