CVE-2026-64773

Analyzed Analyzed - Analysis Complete

Container TCP Port Buffer Overflow Vulnerability

Publication date: 2026-08-20

Last updated on: 2026-09-01

Assigner: Apple Inc.

Description

An attacker that can reach a container's published TCP port may be able to force the host's forwarding process to buffer an unbounded amount of that client's data in memory, for as long as the backend container connection takes to complete — with no cap on how much accumulates or how long the wait can be stretched. This vulnerability is addressed in container version 1.2.0.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-20

Last Modified

2026-09-01

Generated

2026-09-10

AI Q&A

2026-08-21

EPSS Evaluated

2026-09-07

NVD

CVE-2026-64773

Affected Vendors & Products

Vendor	Product	Version / Range
apple	container	From 0.3.0 (inc) to 1.2.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability allows an attacker to send excessive data to a container's open TCP port, causing the host to store unlimited amounts of that data in memory. The issue persists until the container finishes processing the connection, which could take an unpredictable amount of time.

Impact Analysis

An attacker could exploit this to consume large amounts of system memory on the host, potentially leading to performance degradation, crashes, or denial-of-service conditions for other services running on the same host.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling denial-of-service conditions through unbounded memory consumption. Uncontrolled data buffering may lead to resource exhaustion, affecting availability requirements under both regulations.

Mitigation Strategies

Update the container to version 1.2.0 or later to address the vulnerability. Monitor network traffic to the container's published TCP port for unusual data buffering patterns.

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