# CVE-2026-34690: Adobe After Effects stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-34690-adobe-after-effects-stack-based-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-34690 · Severity: high · CVSS 7.8 · Published 2026-05-12

Adobe After Effects, a professional video editing and visual effects application, is vulnerable to a security flaw when processing specially crafted files. If a user is tricked into opening a malicious file, an attacker could gain the ability to execute unauthorized commands on the user's computer. This could lead to a full system compromise, data theft, or the installation of malware 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-2026-34690 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34690 being exploited in the wild.

**How severe is CVE-2026-34690?** High severity, with a CVSS score of 7.8, published 12 May 2026.

**Which products and versions are affected?** Adobe After Effects <= 25.6.5, 26.0 to <= 26.2.1, 26.0, 25.6.4 and earlier.

**Is there a fix for CVE-2026-34690?** A patch was published on 2026-07-14: Updated advisory and version information provided by vendor Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34690 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-34690?** 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

A stack-based buffer overflow (CWE-121) exists in Adobe After Effects versions 25.6.5, 26.2.1, and earlier. The vulnerability is triggered when the application improperly handles memory while parsing a specially crafted file. An attacker can exploit this by convincing a user to open a malicious project or asset file, leading to arbitrary code execution in the context of the current user. The attack vector is local (AV:L) and requires user interaction (UI:R). Adobe has released security updates (APSB26-78) to address this issue in versions 25.6.6 and 26.3.

## Affected products

- Adobe After Effects <= 25.6.5, 26.0 to <= 26.2.1

## Timeline

- 2026-05-12: disclosed
- 2026-05-12: advisory: Initial advisory published by Adobe
- 2026-07-14: patched: Updated advisory and version information provided by vendor

## References

- [https://helpx.adobe.com/security/products/after_effects/apsb26-78.html](https://helpx.adobe.com/security/products/after_effects/apsb26-78.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)