What’s Vulnerable › Vulnerabilities

CVE-2026-112107: ztxz16 fastllm Safetensors Weight Loading model.cpp CreateBuffer buffer overflow

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-19
• Weakness: CWE-119

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.

Affected products

• ztxz16 fastllm: 1.8.0, 1.8.1, 1.8.2

References

• https://github.com/user-attachments/files/33027393/poc.zip
• https://github.com/ztxz16/fastllm/
• https://github.com/ztxz16/fastllm/issues/758
• https://vuldb.com/cve/CVE-2026-112107
• https://vuldb.com/submit/1013187
• https://vuldb.com/vuln/422072
• https://vuldb.com/vuln/422072/cti

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