Type Vulnerability
M-156, ChromeOS version 16836.32.0 (Browser version 156.0.8078.93）has rolled out to ChromeOS devices on the Stable channel.
Google · Memory corruption
Use after free in WebXR in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted…
CVE-2026-121233
What this means
This is rated high severity (8.8 out of 10). There is no confirmed exploitation of it yet. Ask IT whether Google Chrome is in your estate, and treat that as the priority.
Full vendor description
Type confusion in CacheStorage in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Scoring and exploitation
8.8/ 10
CVSS 3.1 base scoreHigh
Exploitable 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
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- ~0.4% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-843
Affected products ()
- Google Chrome
Show the raw CPE strings (1)
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
References
2 links from the CVE record, grouped by site; the vendor's advisory comes first.
chromereleases.googleblog.com1 linkVendor advisory
- stable-channel-update-for-desktop.html (opens in a new tab)Release Notes · Vendor Advisory
issues.chromium.org1 link
- 552757015 (opens in a new tab)Permissions Required