Read the docs
TI-2026-85334 Aliases CVE-2026-122189GHSA-3rww-8pjc-22w4

Out-of-bounds read in OpenPPL ppl.nn CUDA optimizer quantization

Priority MEDIUM 57CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

OpenPPL ppl.nn up to and including bb84dc9952809b3a5a0036858a3d9f68af1c83d5 is affected, and the product does not use versioning. The OptGraph::InitQuantization function in the CUDA optimizer reads memory outside a buffer when it processes quantization arguments (CWE-125). A remote attacker without privileges can trigger it, and the exploit has been publicly disclosed. The project has not responded to an early issue report.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00242 15th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenPPLppl.nnbb84dc9952809b3a5a0036858a3d9f68af1c83d5—No fix listedCNA
  • ppl.nn VendorOpenPPL Affected bb84dc9952809b3a5a0036858a3d9f68af1c83d5 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:openppl:ppl.nn:*:*:*:*:*:*:*:*——OpenPPL
  • cpe:2.3:a:openppl:ppl.nn:*:*:*:*:*:*:*:* Versions — — ·OpenPPL

Remediation

The sources list no fixed version for ppl.nn.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-122189
  2. 2026-11-05 Alias added: GHSA-3rww-8pjc-22w4
  3. 2026-11-05 CISA SSVC decision points changed
  4. 2026-11-05 Priority changed: LOW → MEDIUM
  5. 2026-11-06 Affected versions changed · Red Hat
  6. 2026-11-06 CVSS score added · Red Hat

References

Exploit 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences