Published Sep 14, 2026Sources checked Oct 21, 2026
5.3MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-90831 and is rated Medium severity with a CVSS score of 5.3. 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-2026-90831?
A vulnerability was detected in GNU Binutils 2.47. The affected element is the function _bfd_elf_strtab_delref of the file bfd/elf-strtab.c of the component ELF String Table.
The manipulation results in memory corruption. The attack requires a local approach.
The exploit is now public and may be used. The project was informed of the problem early through a bug report but has not responded yet.