Buffer Overflow Vulnerability in GNU Binutils by GNU
CVE-2026-90804

2.4LOW

Key Information:

Vendor

Gnu
Status
Binutils
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90804?

A buffer overflow vulnerability has been identified in the GNU Binutils version 2.47, specifically in the _bfd_elf_write_section_eh_frame function located within the bfd/elf-eh-frame.c file. This vulnerability arises from improper handling of the cie_length, fde_length, augmentation_data_size, and write_offset parameters, allowing an attacker to manipulate these parameters to trigger a buffer overflow. This attack requires local access, emphasizing that it may be used by a local user to compromise system integrity. Despite being informed of the issue through a bug report, the project maintainers have not yet addressed the vulnerability.

Affected Version(s)

Binutils 2.47

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90804 - Proof of Concept

References

https://vuldb.com/vuln/403306
vdb-entrytechnical-description
https://vuldb.com/vuln/403306/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90804
third-party-advisory

CVSS V4

Score:
2.4
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dem0000000 (VulDB User)
VulDB CNA Team
.