CVSS 3.1
9.6 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCVE-2026-121250 google chrome: Use After Free
Critical (9.6) in google chrome. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
On this page
Use after free in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: High)
Severity
- EPSS
- 0.3% (unchanged from 0.3% a week ago) estimated probability of exploitation activity in the next 30 days; 24th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-04. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-416 Use After Free
- Published
- Modified
- NVD analysis
- Analyzed
- Record from
- the NVD, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Google Chrome | from 157.0.8103.38 before 157.0.8103.38 |
Fix and patched versions
- openSUSE: fixed package versions per release
- Vendor advisory: https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Debian | 12, 13, 14 | chromium | no fix listed | DEBIAN-CVE-2026-121250 |
| openSUSE | Tumbleweed | chromium | 157.0.8103.38-1.1 | openSUSE-SU-2026:12426-1 |
From the distributions' data via OSV.dev: the Debian Security Tracker; SUSE security data, CC BY 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Debian · openSUSE.
Red Hat
Red Hat rates this Important.
Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-121250.