Published Sep 14, 2026Sources checked Oct 21, 2026
6.6MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-90801 and is rated Medium severity with a CVSS score of 6.6. 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 15, 2026
Release Notes
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-2026-90801?
A security flaw has been discovered in GNU Binutils 2.47. This impacts the function cache_bwrite of the file bfd/cache.c of the component ld.
The manipulation of the argument nbytes results in buffer overflow. The attack requires a local approach.
The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.