CVE intelligence

CVE-2026-15003

Vulnerability intelligence

Published Jul 27, 2026Sources checked Oct 28, 2026

5.6MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-15003 and is rated Medium severity with a CVSS score of 5.6. 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: Sep 13, 2026

CBL-Mariner Releases

Vendor-listed releases

13.2-11

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-2026-15003?

A flaw was found in the GNU Binutils (Binary Utilities) linker. This vulnerability, a heap-buffer-overflow read (CWE-125), occurs when the linker processes a specially crafted 32-bit XCOFF (Extended Common Object File Format) object file.

An attacker could exploit this by providing a malicious file, leading to an out-of-bounds read of memory. This can result in information disclosure, potentially revealing sensitive heap data, and a Denial of Service (DoS) due to the linker crashing.

Source: NVD