Published May 27, 2025Sources checked Oct 28, 2026
4.4MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2025-5278 and is rated Medium severity with a CVSS score of 4.4. 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: Aug 7, 2026
CBL-Mariner Releases
Vendor-listed releases
9.4-7
CISA KEVNot listedBased on the latest collected catalog
EPSS0.3%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2025-5278?
A flaw was found in GNU Coreutils. The sort utility's begfield() function is vulnerable to a heap buffer under-read.
The program may access memory outside the allocated buffer if a user runs a crafted command using the traditional key format. A malicious input could lead to a crash or leak sensitive data.