Quick answers
- Is CVE-2026-81993 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-81993 being exploited in the wild.
- How severe is CVE-2026-81993?
- Medium severity, with a CVSS score of 5.5, published 8 September 2026.
- Which products and versions are affected?
- Adobe Acrobat Reader.
- Is there a fix for CVE-2026-81993?
- 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-2026-81993 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-81993?
- 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
A heap-based buffer overflow exists in Adobe Acrobat Reader's PDF parsing logic, allowing an attacker to read beyond allocated memory boundaries and leak sensitive information. The vulnerability requires user interaction—specifically, the victim must open a malicious PDF file—to be triggered. The attacker gains information disclosure capabilities through memory read access. No authentication or network connectivity is required; the attack surface is limited to local file opening. Adobe has released patches through advisory APSB26-141 (patch availability details not accessible in the provided reference materials).
Affected products
- Adobe Acrobat Reader
Timeline
- 2026-09-08: disclosed