CVE-2026-48373
Received Received - Intake

Heap-based Buffer Overflow in Acrobat Reader

Vulnerability report for CVE-2026-48373, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-07-17

Last updated on: 2026-07-17

Assigner: Adobe Systems Incorporated

Description

Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

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Meta Information

Published
2026-07-17
Last Modified
2026-07-17
Generated
2026-07-18
AI Q&A
2026-07-17
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
adobe acrobat_reader *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

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Executive Summary

This is a Heap-based Buffer Overflow vulnerability in Acrobat Reader that could allow arbitrary code execution. It requires user interaction, meaning a victim must open a malicious file to trigger the issue.

Detection Guidance

This vulnerability requires user interaction to exploit, specifically opening a malicious file. Detection involves monitoring for suspicious PDF files or unusual processes after opening files. Check for Adobe Acrobat Reader versions affected by this issue and scan for heap-based buffer overflow indicators in memory during PDF processing.

Impact Analysis

If exploited, this vulnerability could let an attacker run malicious code on your system with the same permissions as your user account. This could lead to data theft, system damage, or further compromise of your device.

Compliance Impact

This vulnerability could lead to arbitrary code execution, potentially allowing unauthorized access to sensitive data. This may impact compliance with GDPR by risking data breaches and HIPAA by exposing protected health information if exploited.

Mitigation Strategies

Update Adobe Acrobat Reader to the latest version to patch the vulnerability. Avoid opening untrusted or suspicious files until the update is applied.

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