CVE-2026-9966: Integer overflow in Google Chrome
CVE-2026-9966 is an integer overflow vulnerability in the XML processing component of Google Chrome on Windows versions prior to 148. 0. 7778. 216. This flaw could allow a remote attacker who has already compromised the renderer process to potentially escape the browser's sandbox by using a specially crafted HTML page. The vulnerability is classified with high severity by Chromium security. No CVSS score is provided, and no explicit patch status is confirmed in the available data. The vendor advisory link is provided but does not specify remediation details in the input data.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow in XML handling within Google Chrome on Windows platforms before version 148.0.7778.216. Exploitation requires prior compromise of the renderer process and could lead to sandbox escape, increasing the attacker's privileges beyond the renderer sandbox. The vulnerability is acknowledged by Google with a high severity rating. No direct patch or remediation information is included in the provided data, though a vendor advisory URL is referenced.
Potential Impact
Successful exploitation could allow an attacker who has compromised the renderer process to escape the sandbox, potentially leading to elevated privileges and broader system compromise beyond the browser sandbox. This increases the risk associated with renderer process compromises by enabling further exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html for current remediation guidance. Until official confirmation of a fix is obtained, users should update to version 148.0.7778.216 or later once available and exercise caution with untrusted HTML content.
CVE-2026-9966: Integer overflow in Google Chrome
Description
CVE-2026-9966 is an integer overflow vulnerability in the XML processing component of Google Chrome on Windows versions prior to 148. 0. 7778. 216. This flaw could allow a remote attacker who has already compromised the renderer process to potentially escape the browser's sandbox by using a specially crafted HTML page. The vulnerability is classified with high severity by Chromium security. No CVSS score is provided, and no explicit patch status is confirmed in the available data. The vendor advisory link is provided but does not specify remediation details in the input data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow in XML handling within Google Chrome on Windows platforms before version 148.0.7778.216. Exploitation requires prior compromise of the renderer process and could lead to sandbox escape, increasing the attacker's privileges beyond the renderer sandbox. The vulnerability is acknowledged by Google with a high severity rating. No direct patch or remediation information is included in the provided data, though a vendor advisory URL is referenced.
Potential Impact
Successful exploitation could allow an attacker who has compromised the renderer process to escape the sandbox, potentially leading to elevated privileges and broader system compromise beyond the browser sandbox. This increases the risk associated with renderer process compromises by enabling further exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html for current remediation guidance. Until official confirmation of a fix is obtained, users should update to version 148.0.7778.216 or later once available and exercise caution with untrusted HTML content.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-28T17:25:03.564Z
- 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: 6a18c676e29bf47b503b6336
Added to database: 5/28/2026, 10:49:26 PM
Last enriched: 5/28/2026, 11:19:16 PM
Last updated: 5/29/2026, 2:05:45 PM
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.