CVE-2026-122189— OpenPPL ppl.nn CUDA Optimizer opt_graph.cc InitQuantization out-of-bounds

Quick assessment

Affected

OpenPPL ppl.nn

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 OpenPPL 的 ppl.nn 组件（版本截至 bb84dc9952809b3a5a0036858a3d9f68af1c83d5）中发现一个漏洞。受影响的是 CUDA 优化器组件中文件 src/ppl/nn/engines/cuda/optimizer/opt_graph.cc 内的函数 OptGraph::InitQuantization。若对参数 per_channel、bit_width、tensor_max、tensor_min 或 scale 进行恶意操纵，将导致越界读取。该攻击可远程发起，且利用方

CVSS 6.3 · Medium Updated Nov 05, 2026

Possible ATT&CK Techniques 2 AI

T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

OpenPPL ppl.nn CUDA Optimizer opt_graph.cc InitQuantization out-of-bounds

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability has been found in OpenPPL ppl.nn up to bb84dc9952809b3a5a0036858a3d9f68af1c83d5. The affected element is the function OptGraph::InitQuantization of the file src/ppl/nn/engines/cuda/optimizer/opt_graph.cc of the component CUDA Optimizer. Such manipulation of the argument per_channel/bit_width/tensor_max/tensor_min/scale leads to out-of-bounds read. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存读

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenPPL	ppl.nn	bb84dc9952809b3a5a0036858a3d9f68af1c83d5	`cpe:2.3:a:openppl:ppl.nn::::::::`

II. Public POCs for CVE-2026-122189

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-122189

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Other References for CVE-2026-122189 (7)

https://github.com/OpenPPL/ppl.nn/issues/975 issue-tracking
https://github.com/user-attachments/files/33393000/poc.zip exploit
https://github.com/OpenPPL/ppl.nn/ product
https://vuldb.com/cve/CVE-2026-122189 third-party-advisory
https://vuldb.com/vuln/431163/cti signature permissions-required
https://vuldb.com/vuln/431163 vdb-entry technical-description
https://vuldb.com/submit/1028313 third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-122189

IV. Related Vulnerabilities

Same weakness: CWE-125