# CVE-2026-34643: Adobe After Effects out-of-bounds write

Source: https://junglewise.ai/threats/cve-2026-34643-adobe-after-effects-out-of-bounds-write  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-34643 · Severity: high · CVSS 7.8 · Published 2026-05-12

Adobe After Effects, a professional video editing and visual effects application, is affected by a security flaw that could allow an attacker to take control of a user's computer. To exploit this, an attacker would need to trick a user into opening a specially crafted malicious file. Successful exploitation could lead to unauthorized software installation, data theft, or complete system compromise in the context of the logged-in user.

Technologies: [Adobe After Effects](https://junglewise.ai/threats/technologies/after-effects). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-34643 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34643 being exploited in the wild.

**How severe is CVE-2026-34643?** High severity, with a CVSS score of 7.8, published 12 May 2026.

**Which products and versions are affected?** Adobe After Effects 26.0, 25.6.4 and earlier.

**Is there a fix for CVE-2026-34643?** 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-2026-34643 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34643?** Check whether you run Adobe After Effects 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

An out-of-bounds write vulnerability (CWE-787) exists in Adobe After Effects versions 26.0, 25.6.4 and earlier. The flaw is triggered when the application processes a malformed file, leading to memory corruption. An attacker can leverage this to execute arbitrary code with the privileges of the current user. Exploitation requires local delivery of a malicious file and user interaction (opening the file). Adobe has addressed this issue in updated versions of the software.

## Affected products

- Adobe After Effects 26.0, 25.6.4 and earlier

## Timeline

- 2026-05-12: advisory: Initial disclosure by Adobe and NVD

## References

- [https://helpx.adobe.com/security/products/after_effects/apsb26-48.html](https://helpx.adobe.com/security/products/after_effects/apsb26-48.html)

## Related threats

- [Adobe After Effects heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-123263-after-effects-is-affected-by-a-heap-based-buffer-overflow)
- [Adobe After Effects out-of-bounds write vulnerability](https://junglewise.ai/threats/cve-2026-113538-after-effects-is-affected-by-an-out-of-bounds-write)
- [Adobe After Effects out-of-bounds write arbitrary code execution](https://junglewise.ai/threats/cve-2026-113536-after-effects-is-affected-by-an-out-of-bounds-write)
- [Adobe After Effects improper input validation arbitrary code execution](https://junglewise.ai/threats/cve-2026-113534-after-effects-is-affected-by-an-improper-input-validation)
- [Adobe After Effects path traversal in file handling](https://junglewise.ai/threats/cve-2026-113532-after-effects-is-affected-by-an-improper-limitation-of-a)