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CVE-2026-121131

CRITICALCVSS 9.6/10EPSS 0.25%

Last modified

CVE-2026-121131 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. Use after free in Mobile 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 Chrome extension. (Chromium security severity: High). EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

Use after free in Mobile 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 Chrome extension. (Chromium security severity: High)

Metrics

CVSS 3.1
9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability
0.25%

16.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GoogleChrome< 157.0.8103.38

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-121131?
Use after free in Mobile 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 Chrome extension. (Chromium security severity: High)
How severe is CVE-2026-121131?
CVE-2026-121131 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-121131?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST