Google Chrome: Memory corruption in Prompts allows sandbox escape on Android
Summary
A memory corruption flaw in the Prompts component of Google Chrome for Android before 156.0.8078.47 allows a remote attacker to potentially execute arbitrary code outside the Chrome sandbox. The attacker needs a crafted HTML page that the user must open, so user interaction is required. Google rates the Chromium security severity as Medium, while the CVSS score is 9.6 (critical) because the scope is changed. The sources disagree on the bug type, and no exploitation has been observed.
Affected
- Google Chrome for Android before 156.0.8078.47
- Desktop platforms (Linux, macOS, Windows) are listed in a third-party bulletin but not in the NVD record; scope uncertain
Fixed in
- Google Chrome 156.0.8078.47 for Android (delivered via Google Play)
- Newer Chrome 156 builds include additional fixes; latest available build recommended
Workaround
- No workaround known. Update Chrome to a fixed or newer version.
Exploitation
- Not listed in CISA KEV; EPSS unknown.
- No public proof of concept found for this CVE.
- Google did not flag the batch's fixes as exploited in the wild; this statement does not cover this CVE specifically.
Our recommendation
- Update Chrome on all Android devices to the latest available build and confirm that Google Play auto-updates work.
- Update Chrome on desktop systems as well, since the platform scope is uncertain.
- Check that staff devices (including BYOD) are on a current Chrome version.
- Monitor for exploitation news and prioritise this update in the normal fast browser patch cycle.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Chrome Releases: Stable Channel Update for Desktop chromereleases.googleblog.com
- Chromium issue tracker 517477395 issues.chromium.org
- NVD record via Vulners vulners.com
- HKCERT security bulletin www.hkcert.org
- Chrome 156 stable what's new (ChromeGeek) www.chromegeek.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 22:33.
Original description (NVD)
Memory corruption in Prompts in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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