CVE-2026-11301 in Chrome
Summary
by MITRE • 06/05/2026
Inappropriate implementation in LiveCaption in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially perform out of bounds memory access via malicious network traffic. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 06/05/2026
The vulnerability resides within the LiveCaption feature of Google Chrome, a component designed to provide real-time captioning for audio content. This functionality represents a sophisticated multimedia processing system that handles audio streams and converts them into text captions. The flaw manifests as an improper implementation that fails to adequately validate memory boundaries during the processing of network-sourced audio data. Such a weakness creates a potential pathway for remote attackers to exploit memory access violations through carefully crafted malicious network traffic, potentially leading to system instability or unauthorized code execution.
The technical nature of this vulnerability aligns with common memory safety issues found in software applications processing external data streams. The flaw represents an out-of-bounds memory access condition where the LiveCaption component does not properly validate input parameters before accessing memory locations. This type of vulnerability commonly stems from inadequate bounds checking mechanisms within the audio processing pipeline, particularly when handling variable-length network data. The Chromium security severity classification of Low indicates the vulnerability's potential impact on system stability rather than direct privilege escalation or remote code execution capabilities.
From an operational perspective, this vulnerability affects users who have LiveCaption enabled in Chrome, which is typically activated by default for accessibility purposes. Attackers could potentially exploit this weakness by delivering malicious audio streams through web pages or network services that Chrome processes. The attack vector requires the victim to be actively using Chrome with LiveCaption enabled, making the exploitation context-specific to multimedia content consumption scenarios. The memory access violation could manifest as application crashes, data corruption, or potentially more severe impacts depending on the specific memory layout and access patterns involved.
Security mitigations for this vulnerability primarily involve updating to Chrome version 149.0.7827.53 or later, which contains the necessary patches to address the memory boundary checking issues. Organizations should prioritize this update as part of their regular patch management procedures, particularly in environments where Chrome is extensively used for multimedia content consumption. Additionally, network administrators can implement monitoring for suspicious audio content delivery patterns and consider temporary disabling of LiveCaption functionality in high-risk environments. The fix likely involves implementing proper bounds checking mechanisms within the audio processing pipeline and ensuring that all memory access operations are validated against allocated buffer boundaries. This vulnerability demonstrates the importance of memory safety practices in multimedia processing components and aligns with common CWE categories related to buffer overflows and memory access violations. The ATT&CK framework would categorize this as a memory corruption technique that could potentially be leveraged for privilege escalation or system compromise, though the current severity classification suggests limited immediate threat level.