Google · Memory corruption
Use after free in Browser in Google Chrome on on Windows prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page
At a glance
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
- Leaders should confirm whether Google Chrome on Windows is up to date with the latest security patches.
- IT teams should review Chromium-based browser updates to ensure this vulnerability is addressed.
Questions to ask IT
- Do we run Google Chrome and Microsoft Edge, and is every instance on version 156.0.8078.73 or later?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 30 Nov?
Next steps
- Confirm whether this affects systems or suppliers in your estate
Vulnerability facts
Full CVE detail CVE-2026-118330- 8.8 · HighExploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Not listed
- ~0.3% estimated chance of attack in 30 days
- Before 156.0.8078.73
- 156.0.8078.73
Versions are as the CVE record states them; check the vendor advisory before planning a fix.
- The vulnerability affects Google Chrome on Windows prior to version 156.0.8078.73.
- Microsoft Edge (Chromium-based) incorporates Chromium updates that address this issue.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- A vulnerability in Google Chrome on Windows prior to 156.0.8078.73 allows remote code execution inside the sandbox via a crafted HTML page.
- Microsoft Edge (Chromium-based) addresses this vulnerability through Chromium updates.
Read the original reportMicrosoft Security Update Guide RSS(opens in a new tab)
Products and services involved
- Google Chrome93% match confidence · CVE-2026-118330
- Microsoft Edge98% match confidence · CVE-2026-118330
Part of Vulnerabilities in Windows and Chrome
- NetamLoader Malware Targets Government Windows 10 Systems in Asia via .NET Injection
- Heap-based buffer overflow in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally
- Input Validation Flaw in Views in Google Chrome on on Windows prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a…
- Out-of-bounds read in Windows USB Hub Driver allows an unauthorized attacker to elevate privileges with a physical attack
Pulse
Last change 31 Oct · Recheck overdue since 1 Nov 2026, 18:24 UK time
- Story31 Oct 2026, 18:24 UK time · 31 Oct
Linked reporting from Microsoft Security Update Guide RSS (vendor psirt).
Read source (Microsoft Security Update Guide RSS)
1 entry so far. The timeline chart appears once this story has more history.
Sources
Chromium: CVE-2026-118330 Use after free in Browser
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Use after free in Browser in Google Chrome on on Windows prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page
- ProbableSummary fact75% confidence
Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](https://chromereleases.googleblog.com/2026) for more information.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2026-118330