Memory Corruption in GNU Binutils Affects ELF String Table Function
CVE-2026-90831

4.8MEDIUM

Key Information:

Vendor

Gnu
Status
Binutils
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90831?

A vulnerability in GNU Binutils 2.47 has been identified within the ELF String Table function _bfd_elf_strtab_delref, leading to potential memory corruption. This flaw can be exploited through a local attack vector. The vulnerability has been publicly disclosed, and the responsible project has yet to provide a remediation following initial reports of the issue. Users are advised to remain vigilant and monitor for updates regarding this exploit.

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-2026-90831 - Proof of Concept

References

https://vuldb.com/vuln/403333
vdb-entrytechnical-description
https://vuldb.com/vuln/403333/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90831
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

wsstssw (VulDB User)
VulDB CNA Team
.