# CVE-2026-81983: Adobe Acrobat Reader out-of-bounds write vulnerability

Source: https://junglewise.ai/threats/cve-2026-81983-adobe-acrobat-reader-out-of-bounds-write-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-81983 · Severity: high · CVSS 7.8 · Published 2026-09-08

Adobe Acrobat Reader contains an out-of-bounds write vulnerability that allows arbitrary code execution when a user opens a specially crafted PDF file. An attacker can exploit this by sending a malicious document to a user, gaining the ability to execute code with the privileges of the person viewing the PDF. This represents a significant risk to users handling untrusted documents.

Technologies: [Adobe Acrobat](https://junglewise.ai/threats/technologies/acrobat), [Adobe Acrobat Reader](https://junglewise.ai/threats/technologies/acrobat-reader), [Adobe Acrobat Dc](https://junglewise.ai/threats/technologies/acrobat-dc), [Adobe Acrobat Reader Dc](https://junglewise.ai/threats/technologies/acrobat-reader-dc), [Apple macOS](https://junglewise.ai/threats/technologies/macos), [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe), [Apple](https://junglewise.ai/threats/vendors/apple), [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-81983 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81983 being exploited in the wild.

**How severe is CVE-2026-81983?** High severity, with a CVSS score of 7.8, published 8 September 2026.

**Which products and versions are affected?** Adobe Acrobat Reader.

**Is there a fix for CVE-2026-81983?** 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-2026-81983 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-81983?** Check whether you run Adobe Acrobat, Adobe Acrobat Reader, Adobe Acrobat Dc or one of the others listed. 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

The vulnerability is an out-of-bounds write flaw in Adobe Acrobat Reader's PDF parsing or rendering component. Exploitation requires user interaction—specifically, a victim must open a malicious PDF file—but no authentication or elevated privileges are required. A successful exploit allows an attacker to achieve arbitrary code execution in the context of the current user, potentially leading to data theft, malware installation, or lateral movement within a network. Patches are expected to be released through Adobe's security update process.

## Affected products

- Adobe Acrobat Reader

## Timeline

- 2026-09-08: disclosed

## References

- [https://helpx.adobe.com/security/products/acrobat/apsb26-141.html](https://helpx.adobe.com/security/products/acrobat/apsb26-141.html)

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