CVE-2026-9939: Heap buffer overflow in Google Chrome
CVE-2026-9939 is a heap buffer overflow vulnerability in the WebCodecs component of Google Chrome versions prior to 148. 0. 7778. 216. This flaw allows a remote attacker to execute arbitrary code within the browser's sandbox by delivering a crafted HTML page. The vulnerability has been publicly disclosed but there is no explicit CVSS score or detailed vendor remediation status provided in the available data.
AI Analysis
Technical Summary
This vulnerability involves a heap buffer overflow in the WebCodecs feature of Google Chrome before version 148.0.7778.216. Exploitation requires a remote attacker to supply a specially crafted HTML page, which can trigger arbitrary code execution inside the sandbox environment of the browser. The Chromium security team has classified this issue with high severity. The vendor advisory URL indicates a stable channel update but does not explicitly confirm patch availability or remediation details.
Potential Impact
Successful exploitation could allow remote code execution within the sandbox of Google Chrome, potentially compromising the affected user's browser environment. There is no evidence of known exploits in the wild at this time. The impact is significant given the ability to execute arbitrary code remotely, but constrained by sandbox containment.
Mitigation Recommendations
The vendor advisory linked suggests a stable channel update for Chrome, implying that updating to version 148.0.7778.216 or later addresses the issue. Users should apply the latest Chrome updates promptly to remediate this vulnerability. Patch status is not explicitly confirmed in the advisory content provided; therefore, users should verify the update availability directly from the official Chrome release notes or update mechanism.
CVE-2026-9939: Heap buffer overflow in Google Chrome
Description
CVE-2026-9939 is a heap buffer overflow vulnerability in the WebCodecs component of Google Chrome versions prior to 148. 0. 7778. 216. This flaw allows a remote attacker to execute arbitrary code within the browser's sandbox by delivering a crafted HTML page. The vulnerability has been publicly disclosed but there is no explicit CVSS score or detailed vendor remediation status provided in the available data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap buffer overflow in the WebCodecs feature of Google Chrome before version 148.0.7778.216. Exploitation requires a remote attacker to supply a specially crafted HTML page, which can trigger arbitrary code execution inside the sandbox environment of the browser. The Chromium security team has classified this issue with high severity. The vendor advisory URL indicates a stable channel update but does not explicitly confirm patch availability or remediation details.
Potential Impact
Successful exploitation could allow remote code execution within the sandbox of Google Chrome, potentially compromising the affected user's browser environment. There is no evidence of known exploits in the wild at this time. The impact is significant given the ability to execute arbitrary code remotely, but constrained by sandbox containment.
Mitigation Recommendations
The vendor advisory linked suggests a stable channel update for Chrome, implying that updating to version 148.0.7778.216 or later addresses the issue. Users should apply the latest Chrome updates promptly to remediate this vulnerability. Patch status is not explicitly confirmed in the advisory content provided; therefore, users should verify the update availability directly from the official Chrome release notes or update mechanism.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-28T17:24:55.812Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html","vendor":"Google"}]
Threat ID: 6a18c66fe29bf47b503b60d1
Added to database: 5/28/2026, 10:49:19 PM
Last enriched: 5/28/2026, 11:34:45 PM
Last updated: 5/29/2026, 7:58:49 AM
Views: 5
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