Google Chrome: Use-after-free in PDF component allows code execution
Summary
Google Chrome on Windows, macOS and Linux contains a use-after-free flaw in its PDF component. A remote attacker can use a crafted HTML page to execute arbitrary code outside the browser sandbox. The attacker needs only that the victim opens the page, and Google rates the bug Critical.
Affected
- Google Chrome prior to 155.0.8059.79 (Windows, macOS, Linux)
- The CVE record lists the affected range as "155.0.8059.79 to < 155.0.8059.79", which is inconsistent with the description.
Fixed in
- Linux: 155.0.8059.79
- Windows: 155.0.8059.79 or later
- macOS: 155.0.8059.80 or later (the vendor advisory lists .80 for Mac)
- Debian chromium (bookworm): 155.0.8059.79-1~deb12u1
- Ubuntu: chromium-browser is not affected because it installs the Chromium snap
Workaround
Unknown. The vendor documents no interim mitigation. Apply the update.
Exploitation
- CISA SSVC: exploitation none, automatable no, technical impact total
- Not listed in CISA KEV, according to a third-party tracker (EPSS 0.21%)
- No public proof of concept found; this does not prove none exists
- The vendor advisory does not mention in-the-wild exploitation
Our recommendation
- Inventory Chrome versions on all Windows, macOS and Linux endpoints.
- Update to the current stable Chrome release (at least 155.0.8059.80 on Mac, 155.0.8059.79 on Windows and Linux).
- Enforce the update through managed policy rather than relying on users.
- Monitor CISA KEV and the Chromium issue tracker for changes in 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
- OSV: DEBIAN-CVE-2026-110136 osv.dev
- Ubuntu CVE-2026-110136 ubuntu.com
- Malwarebytes: Chrome update fixes 37 security flaws www.malwarebytes.com
- GitHub alert (astruzocyber) github.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, 22:53.
Original description (NVD)
Use after free in PDF in Google Chrome prior to 155.0.8059.79 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
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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