CVE-2026-112107
ztxz16 fastllm Safetensors Weight Loading model.cpp CreateBuffer buffer overflow
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 18, 2026
Description
A flaw has been found in ztxz16 fastllm up to 1.8.2. Affected by this issue is the function SafeTensorItem::CreateBuffer of the file src/model.cpp of the component Safetensors Weight Loading. This manipulation of the argument data_offsets causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | VulDB |
| 3.0 | 6.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
fastllmztxz16 |
|
References
- VDB-422072 | ztxz16 fastllm Safetensors Weight Loading model.cpp CreateBuffer buffer overflowvdb-entrytechnical-description
- VDB-422072 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-112107 | CVE Analysis and Reportthird-party-advisory
- Submit #1013187 | ztxz16 fastllm commit 324b4d1 (master branch as of 2026-10-04) Heap-based Buffer Overflowthird-party-advisory
- https://github.com/ztxz16/fastllm/issues/758issue-tracking
- https://github.com/user-attachments/files/33027393/poc.zipexploit
- https://github.com/ztxz16/fastllm/product
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