Published Sep 15, 2026Sources checked Nov 11, 2026
3.3LOWCVSS out of 10
What this means
Review the available evidence
CVE-2026-91780 and is rated Low severity with a CVSS score of 3.3. 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: Nov 1, 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-2026-91780?
A weakness has been identified in GNU Binutils 2.47. This impacts the function elf_link_add_object_symbols of the file bfd/elflink.c.
Executing a manipulation can lead to null pointer dereference. The attack needs to be launched locally.
The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.