Google Chrome: Incorrect authorization in Updater allows sandbox escape
Summary
Google Chrome before 155.0.8059.79 contains an incorrect authorization flaw in the Updater component. A local attacker can use a local program to execute arbitrary code outside the Chrome sandbox. Exploitation requires that the attacker already has local code execution and that the user interacts with the system, and the CVSS vector and the description are inconsistent about the attack vector.
Affected
- Google Chrome prior to 155.0.8059.79
- Affected platforms as described by the vendor: Unknown.
- Whether Linux builds include the Updater component: Unknown.
Fixed in
- Google Chrome 155.0.8059.79 or later (Windows and macOS: 155.0.8059.79/.80 per the Stable channel update)
- Debian bookworm chromium: 155.0.8059.79-1~deb12u1
Workaround
- No vendor-documented workaround is known.
- Until patched, verify the Chrome version on each endpoint and make sure Chrome updates are not blocked by policy.
Exploitation
- No evidence of in-the-wild exploitation found at the time of research.
- CISA KEV: not listed at the time of research.
- No public proof of concept found; this does not prove that none exists.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Confirm that all Chrome installations are at least version 155.0.8059.79, or a later build.
- Check Chrome update policies in managed environments.
- Patch as part of the wider Chrome update, which also includes other critical fixes; prioritise managed Windows and macOS endpoints.
- Monitor CISA KEV and the Chromium issue tracker for exploitation updates.
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 564573066 issues.chromium.org
- Ubuntu security CVE-2026-110159 ubuntu.com
- OSV: DEBIAN-CVE-2026-110159 osv.dev
- GitHub CVE tracker issue 1961 github.com
- Vulners SUSE CVE-2026-110159 vulners.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, 22:52.
Original description (NVD)
Incorrect authorization in Updater in Google Chrome prior to 155.0.8059.79 allowed a local attacker to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)
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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