CVE-2026-17758: Heap buffer overflow in Google Chrome
A heap buffer overflow vulnerability exists in the Dawn component of Google Chrome versions prior to 151.0.7922.72. This flaw could allow a remote attacker to potentially escape the browser's sandbox by crafting a malicious HTML page. The vulnerability has a high CVSS score of 9.6, indicating critical severity. No known exploits are reported in the wild. The issue was publicly disclosed on July 30, 2026.
AI Analysis
Technical Summary
CVE-2026-17758 is a heap buffer overflow vulnerability in the Dawn component of Google Chrome before version 151.0.7922.72. This vulnerability allows a remote attacker to potentially perform a sandbox escape by delivering a specially crafted HTML page. The vulnerability is rated critical with a CVSS 3.1 base score of 9.6 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H). The flaw was disclosed by Google with a stable channel update addressing the issue in Chrome 151.0.7922.72.
Potential Impact
Successful exploitation could allow an attacker to escape the Chrome sandbox, potentially leading to full compromise of the affected system with high confidentiality, integrity, and availability impact. The vulnerability is remotely exploitable without privileges but requires user interaction (UI:R).
Mitigation Recommendations
A fixed version is available: Google Chrome 151.0.7922.72. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigations are specified by the vendor advisory.
CVE-2026-17758: Heap buffer overflow in Google Chrome
Description
A heap buffer overflow vulnerability exists in the Dawn component of Google Chrome versions prior to 151.0.7922.72. This flaw could allow a remote attacker to potentially escape the browser's sandbox by crafting a malicious HTML page. The vulnerability has a high CVSS score of 9.6, indicating critical severity. No known exploits are reported in the wild. The issue was publicly disclosed on July 30, 2026.
CVSS v3.1
Score 9.6critical
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17758 is a heap buffer overflow vulnerability in the Dawn component of Google Chrome before version 151.0.7922.72. This vulnerability allows a remote attacker to potentially perform a sandbox escape by delivering a specially crafted HTML page. The vulnerability is rated critical with a CVSS 3.1 base score of 9.6 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H). The flaw was disclosed by Google with a stable channel update addressing the issue in Chrome 151.0.7922.72.
Potential Impact
Successful exploitation could allow an attacker to escape the Chrome sandbox, potentially leading to full compromise of the affected system with high confidentiality, integrity, and availability impact. The vulnerability is remotely exploitable without privileges but requires user interaction (UI:R).
Mitigation Recommendations
A fixed version is available: Google Chrome 151.0.7922.72. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigations are specified by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:34:39.088Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa08b9c2644c7f849aa8f
Added to database: 07/30/2026, 00:53:31 UTC
Last enriched: 08/06/2026, 17:34:05 UTC
Last updated: 09/12/2026, 22:01:31 UTC
Views: 36
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