Google Chrome: Use after free in Media component
Summary
Google Chrome before 155.0.8059.39 contains a use-after-free flaw (CWE-416) in its Media component, rated High (CVSS 8.8). A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. The attack needs user interaction, such as opening that page. The sources reviewed do not state whether the flaw can be chained into a full sandbox escape.
Affected
- Google Chrome (Desktop) prior to 155.0.8059.39
- Chromium-based browsers that include the affected Chromium code, such as Microsoft Edge, need their own updates
- Linux distributions: Debian 12 packages before 155.0.8059.39-1~deb12u1; Ubuntu chromium-browser (snap)
Fixed in
- Google Chrome 155.0.8059.39 (Linux) and 155.0.8059.39/.40 (Windows, Mac), Stable Channel Update of 6 Oct 2026
- Debian: 155.0.8059.39-1~deb12u1
- openSUSE/SUSE: chromium 155.0.8059.39 or later
- Later Chrome 155 builds also contain fixes for other issues; use the current stable build
Workaround
Unknown. The vendor documents no workaround; applying the update is the fix.
Exploitation
- CISA SSVC (CVE record): Exploitation none, Automatable no, Technical Impact total
- No evidence of exploitation in the wild found in the reviewed sources
- Not listed as known exploited (CISA KEV) by a third-party tracker; the CISA catalogue was not checked directly
- No public proof of concept found; this does not prove that none exists
- EPSS 0.00303 according to a third-party aggregator; check FIRST.org for the current value
Our recommendation
- Update Google Chrome on all workstations to the current Stable build, at least 155.0.8059.39
- Update Microsoft Edge and other Chromium-based browsers separately and verify their versions against the vendor advisory
- Ubuntu users: refresh the chromium snap, since the chromium-browser package is only a wrapper
- Use Chrome Enterprise release channels to control rollout timing, and confirm the update status across all endpoints
- Monitor for unusual browser crashes or unexpected code execution on staff devices
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-2026-106318 osv.dev
- Ubuntu Security: CVE-2026-106318 ubuntu.com
- SUSE CVE entry via Vulners vulners.com
- CISA ADP Vulnrichment via HOL Guard hol.org
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
- Chrome Enterprise: release channels support.google.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, 21:55.
Original description (NVD)
Use after free in Media in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (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.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.