CVE-2026-9887: Use after free in Google Chrome
CVE-2026-9887 is a use-after-free vulnerability in the Proxy component of Google Chrome versions prior to 148.0.7778.216. This flaw allows a remote attacker to execute arbitrary code by leveraging a crafted PAC script. The vulnerability has a high severity with a CVSS score of 7.8. There are no known exploits in the wild at the time of this report. The vendor has published an advisory linked to a stable channel update, indicating a fixed version is available.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Proxy functionality of Google Chrome before version 148.0.7778.216. An attacker can exploit this by supplying a malicious PAC (Proxy Auto-Config) script, which can lead to arbitrary code execution on the affected system. The CVSS vector indicates the attack requires local access with low complexity, no privileges, but user interaction is required. The impact includes high confidentiality, integrity, and availability consequences. The vendor advisory confirms a stable channel update addressing this issue has been released.
Potential Impact
Successful exploitation allows remote code execution via a crafted PAC script, potentially compromising the confidentiality, integrity, and availability of the affected system. The vulnerability is rated high severity with a CVSS score of 7.8. No known exploits are reported in the wild currently.
Mitigation Recommendations
A fixed version of Google Chrome (148.0.7778.216 or later) has been released to address this vulnerability. Users and administrators should update to this version promptly. Since this is a client-side application, patching is the primary mitigation. No additional vendor-recommended mitigations or temporary workarounds are indicated in the advisory.
CVE-2026-9887: Use after free in Google Chrome
Description
CVE-2026-9887 is a use-after-free vulnerability in the Proxy component of Google Chrome versions prior to 148.0.7778.216. This flaw allows a remote attacker to execute arbitrary code by leveraging a crafted PAC script. The vulnerability has a high severity with a CVSS score of 7.8. There are no known exploits in the wild at the time of this report. The vendor has published an advisory linked to a stable channel update, indicating a fixed version is available.
CVSS v3.1
Score 7.8high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Proxy functionality of Google Chrome before version 148.0.7778.216. An attacker can exploit this by supplying a malicious PAC (Proxy Auto-Config) script, which can lead to arbitrary code execution on the affected system. The CVSS vector indicates the attack requires local access with low complexity, no privileges, but user interaction is required. The impact includes high confidentiality, integrity, and availability consequences. The vendor advisory confirms a stable channel update addressing this issue has been released.
Potential Impact
Successful exploitation allows remote code execution via a crafted PAC script, potentially compromising the confidentiality, integrity, and availability of the affected system. The vulnerability is rated high severity with a CVSS score of 7.8. No known exploits are reported in the wild currently.
Mitigation Recommendations
A fixed version of Google Chrome (148.0.7778.216 or later) has been released to address this vulnerability. Users and administrators should update to this version promptly. Since this is a client-side application, patching is the primary mitigation. No additional vendor-recommended mitigations or temporary workarounds are indicated in the advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-28T17:24:43.898Z
- 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: 6a18c65de29bf47b503b50ab
Added to database: 05/28/2026, 22:49:01 UTC
Last enriched: 06/05/2026, 21:10:27 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 46
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