Medium · CVSS 5.3CVE-2026-112107

ztxz16 fastllm Safetensors Weight Loading model.cpp CreateBuffer buffer overflowCVE-2026-112107

Answer in brief

CVE-2026-112107 records a Medium severity (CVSS 5.3) vulnerability in ztxz16 fastllm Safetensors Weight Loading model.cpp CreateBuffer buffer overflow. The current sources do not mark it as known exploited. The current feed maps ztxz16/fastllm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 19, 2026Updated Oct 19, 2026Source checked Oct 19, 2026First seen by HOL Oct 19, 2026Material review Oct 19, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ztxz16/fastllm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ztxz16/fastllmgeneric	1.8.0 \|\| 1.8.1 \|\| 1.8.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for ztxz16/fastllm.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 19, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

ztxz16 fastllm String Parsing gguf.cpp ReadString buffer overflowSame ztxz16/fastllm package