November 14, 2026

CVE Watchtower

CVE-2026-125343Google Chrome Heap-based Buffer Overflow

NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

Vulnerability Summary

Buffer overflow in Compositing in Google Chrome prior to 157.0.8103.50 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Severity Level
HIGH(8.3)
Published Date
Nov 10, 2026
Last Modified
Nov 12, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.42%Probability
Root Weakness (CWE)
CWE-122: Heap-based Buffer Overflow β†—
The buffer being overwritten is allocated in the heap portion of memory.
CVSS v3.1 Base Metrics — Score 8.3 (HIGH)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Google Chrome < 157.0.8103.50
Patched Versions
  • Google Chrome 157.0.8103.50

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Google Chrome and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 10, 2026Published
  • Nov 12, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 03:22 UTC