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CVE-2026-15003

5.6 · MEDIUM

A flaw was found in the GNU Binutils (Binary Utilities) linker.

Published Jul 27, 2026CWE-125EPSS 0.15%

Overview

CVE-2026-15003 is a medium-severity vulnerability. It was published on July 27, 2026 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2026:47171Refaccess.redhat.com/security/cve/CVE-2026-15003Refbugzilla.redhat.com/show_bug.cgi?id=2497805Refsourceware.org/bugzilla/show_bug.cgi?id=34053

How CyberStrike helps

Frequently asked questions

What is CVE-2026-15003?

CVE-2026-15003 is a medium-severity vulnerability. It was published on July 27, 2026 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

How severe is CVE-2026-15003?

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-15003?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-15003?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-15003 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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