Sandbox escape via GPU heap overwrite
Published Jun 11, 2026 · Updated Jun 11, 2026
Heap-based buffer overflow in Google Chrome on Android before 149.0.7827.115 allows remote attackers to escape its sandbox via crafted HTML. The GPU component performs an out-of-bounds write to heap memory, but Google has not disclosed the affected function or unchecked value. Exploitation requires user interaction and prior compromise of the renderer process; successful use crosses the renderer sandbox boundary.
Summary
What happened
Heap-based buffer overflow in Google Chrome on Android before 149.0.7827.115 allows remote attackers to escape its sandbox via crafted HTML. The GPU component performs an out-of-bounds write to heap memory, but Google has not disclosed the affected function or unchecked value. Exploitation requires user interaction and prior compromise of the renderer process; successful use crosses the renderer sandbox boundary.
The record
- CVE
- CVE-2026-12030
- Published
- Jun 11, 2026
- Updated
- Jun 11, 2026
- Vendor
- Go standard library
- Product
- Google Chrome
- Classifications
- CWE-122, T1068
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 11, 2026CVE publishedPublication date reported by the CVE source.
- Jun 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=149.0.7827.115 <149.0.7827.115
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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