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TI-2026-71208 Aliases CVE-2026-84286GHSA-mw4q-pwhm-35f7

Out-of-bounds read and write in ExLlamaV3 kernel table

Priority MEDIUM 50CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Turboderp-org ExLlamaV3 version 3 selects a CUDA kernel using an index supplied by the model without first checking that it is within bounds (CWE-20). A malicious model can force the code to read and invoke an out-of-range function pointer, causing a reproducible crash (CWE-125). Under specific host memory layouts, an attacker may be able to achieve controlled indirect kernel dispatch during model load.

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

Description from the CNA

ExLlamaV3’s EXL3 loader uses an untrusted, model-supplied index to select a CUDA kernel without first verifying that the index is within bounds. A malicious model can force the code to read and invoke an out‑of‑range function pointer, resulting in a reproducible crash. Under specific conditions involving certain host memory layouts, it may be possible for an attacker to exploit this vulnerability to achieve controlled indirect kernel dispatch during model load.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00589 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Turboderp-orgExLlamaV33—No fix listedCNA
  • ExLlamaV3 VendorTurboderp-org Affected 3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for ExLlamaV3.

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. 2026-10-12 Threatist record created from CVE-2026-84286
  2. 2026-10-12 Alias added: GHSA-mw4q-pwhm-35f7
  3. 2026-10-19 CVSS score added · CISA ADP
  4. 2026-10-19 Weakness changed · CISA ADP
  5. 2026-10-19 CISA SSVC decision points changed
  6. 2026-10-19 Priority changed: LOW → MEDIUM
  7. 2026-11-06 Affected versions changed · Red Hat
  8. 2026-11-06 CVSS score added · Red Hat

References

Other 2

  • TI-2026-80583 Out-of-bounds write in turboderp-org ExLlamaV2 GPTQ index handling CVSS 4.0MEDIUM 4.8

Sources

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