CVE-2026-78964: Use after free in Google Chrome
Description
CVE-2026-78964 is a use-after-free vulnerability in the Sync component of Google Chrome on iOS versions prior to 152.0.7977.65. This flaw allows a remote attacker to potentially execute arbitrary code outside the browser sandbox by tricking a user into visiting a specially crafted HTML page. The vulnerability has a high CVSS score of 9.6, indicating critical severity. No official remediation level or patch status is explicitly stated in the provided data, but a vendor advisory link is available for further details.
CVSS v3.1
Score 9.6critical
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Sync feature of Google Chrome on iOS platforms before version 152.0.7977.65. Exploitation requires user interaction (UI:R) and can lead to complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) of the affected system. The attack vector is network-based (AV:N) with low attack complexity (AC:L) and no privileges required (PR:N). The vulnerability allows execution of arbitrary code outside the sandbox via a crafted HTML page.
Potential Impact
Successful exploitation can result in arbitrary code execution outside the sandbox, leading to full compromise of the affected device's confidentiality, integrity, and availability. This could allow an attacker to execute malicious code remotely by convincing a user to visit a malicious webpage.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html for current remediation guidance. Since no explicit remediation level or patch availability is stated, users should monitor official Google Chrome updates and apply the update to version 152.0.7977.65 or later once confirmed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-25T06:05:16.953Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html","vendor":"Google"}]
Threat ID: 6a8df9bfacd9273b49ac6e1a
Added to database: 08/25/2026, 20:23:27 UTC
Last enriched: 09/10/2026, 00:22:24 UTC
Last updated: 10/08/2026, 18:48:48 UTC
Views: 41
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