CVE-2026-112107: Buffer Overflow in ztxz16 fastllm
Description
CVE-2026-112107 is a medium severity buffer overflow vulnerability in the SafeTensorItem::CreateBuffer function of ztxz16 fastllm up to version 1.8.2. The flaw arises from improper handling of the data_offsets argument in the Safetensors Weight Loading component, allowing remote attackers to cause a buffer overflow. Exploit code has been published, but no official response or patch has been provided by the vendor yet.
CVSS v4.0
Score 5.3medium
Affected software
ztxz16
fastllm
pkg:github/ztxz16/fastllmcpe:2.3:a:ztxz16:fastllm:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the SafeTensorItem::CreateBuffer function in the src/model.cpp file of the Safetensors Weight Loading component in ztxz16 fastllm versions 1.8.0, 1.8.1, and 1.8.2. The issue is a buffer overflow caused by manipulation of the data_offsets argument. The vulnerability can be triggered remotely and exploit code is publicly available. The vendor has been informed but has not issued a fix or advisory at this time.
Potential Impact
Successful exploitation of this buffer overflow could allow remote attackers to cause memory corruption, potentially leading to denial of service or limited code execution capabilities. The CVSS 4.0 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, and partial impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor the vendor's advisories for updates. Until a patch is released, avoid processing untrusted Safetensors Weight Loading data with affected versions of fastllm. Implement network-level protections to limit exposure to untrusted sources.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-10-18T18:05:39.827Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad5fcc92cdf04f656466e92
Added to database: 10/19/2026, 11:19:37 UTC
Last enriched: 10/19/2026, 11:33:20 UTC
Last updated: 10/19/2026, 11:34:15 UTC
Views: 6
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