CVE-2026-91781Hinoki check available

Linker crash via non-ELF section dereference

Published Sep 15, 2026 · Updated Sep 15, 2026

A null-pointer dereference in GNU Binutils 2.47 allows local users to crash the GNU linker with a crafted x86-64 PE input file. The elf_x86_64_common_section_index path calls elf_section_flags while processing non-ELF input, dereferencing ELF-specific section data that is absent. Exploitation requires local execution of ld against the malformed input and terminates only the linker process.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

A null-pointer dereference in GNU Binutils 2.47 allows local users to crash the GNU linker with a crafted x86-64 PE input file. The elf_x86_64_common_section_index path calls elf_section_flags while processing non-ELF input, dereferencing ELF-specific section data that is absent. Exploitation requires local execution of ld against the malformed input and terminates only the linker process.

The record

CVE
CVE-2026-91781
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
The GnuPG Project
Product
GNU Binutils
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=2.47

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The GnuPG Project · GNU Binutilsversion=2.47

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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