CVE-2026-9123: Heap buffer overflow in Google Chrome
CVE-2026-9123 is a heap buffer overflow vulnerability in the Chromecast component of Google Chrome on Android, Linux, and ChromeOS platforms prior to version 148.0.7778.179. This flaw allows a local attacker to execute arbitrary code within a sandbox environment by leveraging malicious network traffic. The vulnerability has a high severity rating with a CVSS score of 7.5. No known exploits are reported in the wild at this time. The vendor advisory linked does not explicitly confirm patch availability or remediation status.
AI Analysis
Technical Summary
This vulnerability involves a heap buffer overflow in the Chromecast feature of Google Chrome on specified platforms before version 148.0.7778.179. Exploitation requires local attacker access and involves malicious network traffic to trigger arbitrary code execution inside a sandbox. The CVSS vector indicates the attack requires high attack complexity, no privileges, and no user interaction, with high impact on confidentiality, integrity, and availability. The vendor advisory is available but does not explicitly state patch or remediation details.
Potential Impact
Successful exploitation could allow a local attacker to execute arbitrary code within the sandboxed environment of Chromecast in Chrome, potentially compromising confidentiality, integrity, and availability of the affected system. However, exploitation requires local access and high attack complexity. No known active exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html for current remediation guidance. Until official confirmation, users should update to Chrome version 148.0.7778.179 or later when available. No additional vendor-provided mitigations are specified.
CVE-2026-9123: Heap buffer overflow in Google Chrome
Description
CVE-2026-9123 is a heap buffer overflow vulnerability in the Chromecast component of Google Chrome on Android, Linux, and ChromeOS platforms prior to version 148.0.7778.179. This flaw allows a local attacker to execute arbitrary code within a sandbox environment by leveraging malicious network traffic. The vulnerability has a high severity rating with a CVSS score of 7.5. No known exploits are reported in the wild at this time. The vendor advisory linked does not explicitly confirm patch availability or remediation status.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap buffer overflow in the Chromecast feature of Google Chrome on specified platforms before version 148.0.7778.179. Exploitation requires local attacker access and involves malicious network traffic to trigger arbitrary code execution inside a sandbox. The CVSS vector indicates the attack requires high attack complexity, no privileges, and no user interaction, with high impact on confidentiality, integrity, and availability. The vendor advisory is available but does not explicitly state patch or remediation details.
Potential Impact
Successful exploitation could allow a local attacker to execute arbitrary code within the sandboxed environment of Chromecast in Chrome, potentially compromising confidentiality, integrity, and availability of the affected system. However, exploitation requires local access and high attack complexity. No known active exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html for current remediation guidance. Until official confirmation, users should update to Chrome version 148.0.7778.179 or later when available. No additional vendor-provided mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-20T17:39:25.277Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html","vendor":"Google"}]
Threat ID: 6a0e0cd4ba1db473629e7a27
Added to database: 05/20/2026, 19:34:44 UTC
Last enriched: 05/27/2026, 21:02:01 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 118
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