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CVE-2026-91781

A security vulnerability has been detected in GNU Binutils 2.47. Affected is the function elf_x86_64_common_section_index of the file bfd/elf64-x86-64.c of the component ELF Section Handler. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 is able to address this issue. The identifier of the patch is 7322e9bc30cb282575a701c307851fd3d66fee68. It is suggested to upgrade the affected component.

Security Impact Summary

This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 3.3, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and limited availability for affected systems. Impacting 1 product from gnu organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2026-09-15T09:16:45.153

Last Modified

2026-09-16T15:28:36.267

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 3.3 (LOW)

CVSSv2 Vector

AV:L/AC:L/Au:S/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.1

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-404
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	binutils	2.47	Yes

References

https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34449 Third Party Advisory ([email protected])
https://sourceware.org/bugzilla/show_bug.cgi?id=34449 Exploit, Third Party Advisory ([email protected])
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7322e9bc30cb282575a701c307851fd3d66fee68 Third Party Advisory ([email protected])
https://vuldb.com/cve/CVE-2026-91781 Third Party Advisory ([email protected])
https://vuldb.com/submit/933336 Third Party Advisory ([email protected])
https://vuldb.com/vuln/404052 Third Party Advisory ([email protected])
https://vuldb.com/vuln/404052/cti Permissions Required ([email protected])
https://www.gnu.org/ Product ([email protected])

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For gnu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.