Google Chrome: Incorrect comparison in Fonts allows sandbox code execution
Summary
Google Chrome versions before 155.0.8059.39 contain an incorrect comparison in the Fonts component. A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The attack requires that a user opens the malicious page.
Affected
- Google Chrome prior to 155.0.8059.39 (Windows, Linux)
- Google Chrome for Mac: 155.0.8059.40 is reported as the Mac build; confirm the exact version in the About page
- Chromium packages in Debian prior to 155.0.8059.39-1~deb12u1 (bookworm) and 155.0.8059.39-1~deb13u1 (trixie)
Fixed in
- Google Chrome 155.0.8059.39 (Linux) and 155.0.8059.39/.40 (Windows, Mac) per the Stable Channel Update of 6 October 2026
- Debian chromium 155.0.8059.39-1~deb12u1 (bookworm) and 155.0.8059.39-1~deb13u1 (trixie)
- Unknown for Ubuntu packages.
Workaround
- No vendor workaround known. Installing the fixed build is the remedy.
Exploitation
- No evidence of exploitation in the wild found.
- CISA SSVC (Vulnrichment): exploitation none, not automatable.
- Not in CISA KEV catalogue.
- Chromium rates the flaw Low; the CVSS score of 8.8 is a third-party view.
Our recommendation
- Confirm that all Chrome installations are at or above the fixed builds listed above.
- Check managed update policies (for example Chrome Enterprise or Intune) and the update status of rarely restarted or offline machines.
- Check the gradual rollout: some machines may still run old builds.
- Check Chromium-based browsers such as Microsoft Edge for their own fixed versions.
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
- Debian OSV record CVE-2026-106252 osv.dev
- OpenCVE CVE-2026-106252 app.opencve.io
- Ubuntu security CVE-2026-106252 ubuntu.com
- Tenable plugin 366658 www.tenable.com
- Chromium issue tracker 513446410 issues.chromium.org
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, 22:03.
Original description (NVD)
Incorrect comparison in Fonts in Google Chrome prior to 155.0.8059.39 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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