CVE-2026-34502

Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in Apache Portable Runtime Utility

Publication date: 2026-08-06

Last updated on: 2026-08-07

Assigner: Apache Software Foundation

Description

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-06

Last Modified

2026-08-07

Generated

2026-08-26

AI Q&A

2026-08-06

EPSS Evaluated

2026-08-25

NVD

CVE-2026-34502

EUVD

EUVD-2026-53916

Affected Vendors & Products

Vendor	Product	Version / Range
apache	apr-util	From 1.3.0 (inc) to 1.6.3 (inc)

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This is a heap-based buffer overflow vulnerability in the Apache Portable Runtime Utility's memcached client. It affects versions 1.3.0 through 1.6.3 of the utility. A buffer overflow occurs when a program writes more data to a buffer than it can hold, potentially allowing attackers to execute arbitrary code or cause denial of service.

Detection Guidance

To detect this vulnerability, check if your system is running Apache Portable Runtime Utility versions between 1.3.0 and 1.6.3. Use commands like 'apr-util -v' or inspect package managers for installed versions. Monitor network traffic for unusual memcached client activity or crashes.

Impact Analysis

If exploited, this vulnerability could allow attackers to crash the affected application, execute malicious code, or gain unauthorized access to system resources. Systems using the vulnerable versions of Apache Portable Runtime Utility's memcached client are at risk.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. However, heap-based buffer overflow vulnerabilities can lead to unauthorized data access, modification, or denial of service, which may violate confidentiality requirements in GDPR or integrity requirements in HIPAA.

Mitigation Strategies

Upgrade Apache Portable Runtime Utility to a version beyond 1.6.3 to address the heap-based buffer overflow in the memcached client.

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