Published Sep 23, 2026Sources checked Nov 12, 2026
7.8HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2026-96442 and is rated High severity with a CVSS score of 7.8. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Oct 13, 2026
Release Notes
Vendor-listed releases
29.4-7
CISA KEVNot listedBased on the latest collected catalog
EPSS0.2%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-96442?
A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking.
Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.