Buffer Overflow Vulnerability in ztxz16 fastllm Safetensors Weight Loading Component
CVE-2026-112107

5.3MEDIUM

Key Information:

Vendor

Ztxz16

Status
Fastllm
Vendor
CVE Published:
19 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-112107?

A vulnerability exists in the ztxz16 fastllm component, specifically within the Safetensors Weight Loading due to improper handling of the 'data_offsets' argument in the CreateBuffer function of model.cpp. This flaw can lead to a buffer overflow, allowing for potential remote exploitation. The issue has been publicly acknowledged and disclosed, with the project maintainers yet to address the reported vulnerability. It is crucial for users to be aware and take preventive measures against possible exploits targeting this flaw.

Affected Version(s)

fastllm 1.8.0

fastllm 1.8.1

fastllm 1.8.2

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-2026-112107 - Proof of Concept

References

https://vuldb.com/vuln/422072
vdb-entrytechnical-description
https://vuldb.com/vuln/422072/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-112107
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
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
.