CVE-2026-81993

Acrobat Reader | Heap-based Buffer Overflow (CWE-122)

Published Sep 8, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Analysis

AI-generated

Technical impact

Acrobat Reader is affected by a heap‑based buffer overflow that can expose sensitive data stored in memory. The flaw does not grant arbitrary code execution but can leak confidential information if an attacker succeeds. The vulnerability is identified as CWE‑122, indicating that improper bounds checking on a heap buffer is the cause. Users can be affected when they open a maliciously crafted file.

Affected Systems

Adobe products including Acrobat 2024, Acrobat Reader, and Adobe Acrobat are affected. No specific version numbers are listed, so any installation of these products may be vulnerable until a vendor fix is applied.

Risk and Exploitability

The CVSS score of 5.5 classifies the weakness as moderate, reflecting that exploitation requires user interaction – the victim must open the malicious file – and does not automatically grant high‑level privileges. The EPSS score is not available, and the vulnerability is not listed in CISA’s KEV catalog, indicating that no large‑scale exploits are known. Nonetheless, because sensitive memory contents could be disclosed, the potential impact on confidentiality justifies monitoring and mitigation actions.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Check the Adobe security advisory for a patch and apply any available update immediately.
  • If a patch has not yet been released, enforce user education to avoid opening unknown or unexpected PDF files.
  • Deploy file‑scanning or email‑filtering solutions that can detect and block malicious PDFs before they reach end users.

Generated by OpenCVE AI on September 9, 2026 at 08:59 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Adobe
Adobe acrobat
Adobe acrobat Dc
Adobe acrobat Reader Dc
Apple
Apple macos
Microsoft
Microsoft windows
CPEs cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Adobe
Adobe acrobat
Adobe acrobat Dc
Adobe acrobat Reader Dc
Apple
Apple macos
Microsoft
Microsoft windows
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Title Acrobat Reader | Heap-based Buffer Overflow (CWE-122)
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow

Sources

Status
PUBLISHED
Assigner
adobe
Published
Updated
Sep 9, 2026, 1:50 PM
Reserved
Aug 27, 2026, 9:20 PM
Status
Analyzed
Published
Sep 8, 2026, 9:18 PM
Modified
Sep 10, 2026, 1:26 PM