Heap Buffer Overflow in Chrome WebRTC Allows Remote Exploit

Publication date: 2026-04-28

Last updated on: 2026-04-30

Assigner: Chrome

Description

Heap buffer overflow in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-28

Last Modified

2026-04-30

Generated

2026-07-06

AI Q&A

2026-04-29

EPSS Evaluated

2026-07-05

NVD

CVE-2026-7339

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 147.0.7727.138 (exc)

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 vulnerability is a heap buffer overflow in the WebRTC component of Google Chrome versions prior to 147.0.7727.138. It allows a remote attacker to potentially cause heap corruption by using a specially crafted HTML page.

Impact Analysis

The vulnerability could allow a remote attacker to exploit heap corruption, which might lead to unexpected behavior such as crashes or potentially executing arbitrary code within the context of the browser.

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