Google Chrome: Memory corruption in FullScreen
Summary
A memory corruption flaw in the FullScreen component of Google Chrome desktop allows a remote attacker to potentially execute arbitrary code inside the browser sandbox. Exploitation requires a victim to open a crafted HTML page. The vulnerability is sandbox-scoped (CVSS scope unchanged), so it is not a full system takeover on its own, but it could be chained with a sandbox escape. The NVD CVSS score of 8.8 was reported in the brief and should be re-checked against NVD, as Chromium rates the issue Low.
Affected
- Google Chrome desktop (Windows, macOS, Linux) prior to 156.0.8078.47
- Chromium-based Microsoft Edge prior to 156.0.4314.42, per HKCERT (not verified against the MSRC entry)
- Linux distributions: Debian lists chromium in DSA 6577-1 and DLA 4853-1; Ubuntu chromium-browser is not affected, but the Chromium snap must be updated
Fixed in
- Google Chrome 156.0.8078.47 is the minimum fixed build named in the CVE description; Google's Windows and macOS builds are listed as 156.0.8078.48 (secondary source)
- A later Stable update (156.0.8078.79 or .80) is reported by a secondary source; deploy the newest Stable build
- Debian fixed package versions: Unknown.
Workaround
- Unknown. No vendor workaround was found; patching is the fix.
Exploitation
- In the wild: no evidence found; one aggregator lists the CVE as not in KEV (CISA KEV not checked directly).
- Public proof-of-concept: Unknown (the Chromium issue could not be opened).
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
Our recommendation
- Inventory all Chrome, Chromium-based Edge and Linux Chromium installations.
- Update to the newest Stable build on every endpoint and verify the installed version.
- Confirm that automatic updates are enabled and prioritise browsers used for internet-facing or web-based admin tools.
- Re-check NVD and CISA KEV for changes to the CVSS score or exploitation status.
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 issues.chromium.org
- Vulners: CVE-2026-113291 vulners.com
- Ubuntu Security: CVE-2026-113291 ubuntu.com
- HKCERT: Microsoft Edge multiple vulnerabilities www.hkcert.org
- Strix: CVE-2026-113291 www.strix.ai
- Wikipedia: Google Chrome en.wikipedia.org
- TechSpot: Google Chrome downloads www.techspot.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 31 Oct 2026, 12:12.
Original description (NVD)
Memory corruption in FullScreen in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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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