CVE-2026-122189 Details
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.
A heap-buffer-overflow vulnerability has been identified in OpenPPL's CUDA optimizer component, specifically within the OptGraph::InitQuantization function of the file src/ppl/nn/engines/cuda/optimizer/opt_graph.cc. This vulnerability affects OpenPPL versions prior to the commit bb84dc9952809b3a5a0036858a3d9f68af1c83d5. The issue arises from the function's handling of quantization parameters, where certain keys can be omitted, leading to unchecked map lookups and subsequent out-of-bounds read operations. The vulnerability can be exploited remotely, and the details have been disclosed publicly.
Users are advised to update to the latest version of OpenPPL, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 5, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/OpenPPL/ppl.nn/ | [email protected] | Vendor |
| https://github.com/OpenPPL/ppl.nn/issues/975 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/user-attachments/files/33393000/poc.zip | [email protected] | Broken LinkExploit |
| https://vuldb.com/cve/CVE-2026-122189 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1028313 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/431163 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/431163/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenPPL ppl.nn | bb84dc9952809b3a5a0036858a3d9f68af1c83d5 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Nov 5, 2026 | New CVE Received | [email protected] |