CVE-2026-15003
Received Received - Intake

Heap Buffer Overflow in GNU Binutils Linker

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Red Hat, Inc.

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-27
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
CVE-2026-15003
EUVD
EUVD-2026-49202

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gnu binutils *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-15003 is a heap-buffer-overflow read flaw in the GNU Binutils linker. It occurs when processing a specially crafted 32-bit XCOFF object file, leading to an out-of-bounds memory read. This can expose sensitive heap data and cause the linker to crash.

Detection Guidance

To detect this vulnerability, inspect systems using GNU Binutils for crashes or memory corruption when processing 32-bit XCOFF files. Check for linker errors or heap corruption warnings in logs. Use tools like 'valgrind' to monitor memory access during file processing.

Impact Analysis

This vulnerability may allow attackers to access sensitive information stored in memory. It can also cause the linker to crash, disrupting software builds and leading to Denial of Service (DoS) conditions on affected systems.

Compliance Impact

This vulnerability may impact compliance with GDPR and HIPAA by potentially exposing sensitive heap data through information disclosure. A successful exploit could reveal confidential information, violating data protection requirements under these regulations.

Mitigation Strategies

Update GNU Binutils to the latest patched version immediately. Monitor for crashes in the linker when processing XCOFF files. Restrict access to systems handling object files to trusted users only.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-15003. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart