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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-84286

OOB Read/Write via Negative Array Index in exllamav3_ext Kernel TableCVE-2026-84286

Answer in brief

CVE-2026-84286 records a Unknown severity vulnerability in OOB Read/Write via Negative Array Index in exllamav3_ext Kernel Table. The current sources do not mark it as known exploited. The current feed maps Turboderp-org/ExLlamaV3 (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 12, 2026Updated Oct 12, 2026Source checked Oct 12, 2026First seen by HOL Oct 12, 2026Material review Oct 12, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. 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 Turboderp-org/ExLlamaV3 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Turboderp-org/ExLlamaV3generic3Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Turboderp-org/ExLlamaV3.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 12, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 12, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Oct 12, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencekb.cert.org
  • Source referencekb.cert.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Out-of-bounds write in LR11xx TransceiverAlso CWE-787
  • Out-of-bounds read in Progress MarkLogic ServerAlso CWE-125
  • Out-of-bounds write in Progress MarkLogic ServerAlso CWE-787
  • Quarkus-hibernate-orm-rest-data-panache: quarkus-hibernate-orm-rest-data-panache: information disclosure and dos via unvalidated sort parameter in rest data panacheAlso CWE-20
  • Path traversal in Gleam via unvalidated package application namesSame generic ecosystem
  • WordPress Salevo plugin <= 1.3.0 - Broken Access Control vulnerabilitySame generic ecosystem

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-125, CWE-787, CWE-20
Source
CVE List V5
Source checked
Oct 12, 2026
References
3 linked sources
Open source record