CVE-2026-110659

MEDIUM 5.5

ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.

CWE	CWE-476
Vendor	serge1
Product	elfio
Published	Oct 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

serge1 / ELFIO

0 ≤ 3.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackmd.io: https://hackmd.io/@haind-pwn/elfio-relocation-get-entry-null-deref github.com: https://github.com/serge1/ELFIO/blob/8ae6cec5d60495822ecd57d736f66149da9b1830/elfio/elfio_relocation.hpp#L142 github.com: https://github.com/serge1/ELFIO vulncheck.com: https://www.vulncheck.com/advisories/elfio-through-3.12-null-pointer-dereference-via-relocation-section-accessor-get-entry

Credits

HaiND from the Post and Telecommunication Institute of Technology