# CVE-2026-47959: Adobe Acrobat Reader stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-47959-adobe-acrobat-reader-stack-based-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-47959 · Severity: high · CVSS 7.8 · Published 2026-06-09

Adobe Acrobat Reader is a widely used application for viewing and managing PDF documents. A security flaw in certain versions allows an attacker to take control of a user's computer if the user is tricked into opening a specially crafted, malicious PDF file. This could lead to unauthorized access to personal data or the installation of malicious software on the victim's system.

Technologies: [Adobe Acrobat Reader](https://junglewise.ai/threats/technologies/acrobat-reader). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-47959 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47959 being exploited in the wild.

**How severe is CVE-2026-47959?** High severity, with a CVSS score of 7.8, published 9 June 2026.

**Which products and versions are affected?** Adobe Acrobat Reader 24.001.30365, 26.001.21651 and earlier.

**Is there a fix for CVE-2026-47959?** 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-2026-47959 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-47959?** Check whether you run Adobe Acrobat Reader 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 vulnerability (CWE-121) exists in Adobe Acrobat Reader versions 24.001.30365, 26.001.21651 and earlier. The flaw is triggered when the application improperly handles memory while processing a specially crafted PDF file. An attacker can exploit this by convincing a user to open a malicious document, leading to arbitrary code execution in the context of the current user. The attack vector is local, requiring user interaction (UI:R) but no prior privileges (PR:N). Adobe has addressed this in security bulletin APSB26-63.

## Affected products

- Adobe Acrobat Reader 24.001.30365, 26.001.21651 and earlier

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory: Adobe security bulletin APSB26-63 published

## References

- [https://helpx.adobe.com/security/products/acrobat/apsb26-63.html](https://helpx.adobe.com/security/products/acrobat/apsb26-63.html)

## Related threats

- [Adobe Acrobat Reader denial-of-service via uncontrolled resource consumption](https://junglewise.ai/threats/cve-2026-82001-adobe-acrobat-reader-denial-of-service-via-uncontrolled-resource)
- [Adobe Acrobat Reader privilege escalation via incorrect authorization](https://junglewise.ai/threats/cve-2026-81996-adobe-acrobat-reader-privilege-escalation-via-incorrect)
- [Adobe Acrobat Reader prototype pollution arbitrary file read](https://junglewise.ai/threats/cve-2026-81994-adobe-acrobat-reader-prototype-pollution-arbitrary-file-read)
- [Adobe Acrobat Reader heap buffer overflow in PDF parsing](https://junglewise.ai/threats/cve-2026-81993-adobe-acrobat-reader-heap-buffer-overflow-in-pdf-parsing)
- [Adobe Acrobat Reader heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-81992-adobe-acrobat-reader-heap-based-buffer-overflow)