OOB Read/Write via Negative Array Index in exllamav3_ext Kernel Table
CVSS score
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EPSS probability
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Risk score
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Published
6 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
The EXL3 loader in ExLlamaV3 uses unverified, model-supplied indices to select a CUDA kernel, leading to out-of-bounds function pointer invocation (S0). Under specific conditions, this can result in a reproducible crash or controlled indirect kernel dispatch (S0).
Loading a malicious model can trigger reproducible crashes or be exploited under specific memory layouts to achieve controlled indirect kernel dispatch during model load (S0).
What should be done?
- Follow vendor advisories (S0)
- Ensure trusted model sources (S0)
Chain of evidence and sources
EXL3 yükleyicisi, doğrulanmamış model sağlanan indeksi kullanarak CUDA çekirdeği seçer (S0).
Bu durum tekrarlanabilir bir çökmeye veya belirli bellek düzenlerinde kontrollü dolaylı çekirdek sevkiyatına yol açabilir (S0).
Show the technical text from the sources
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.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-84286 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Turboderp-org | ExLlamaV3 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-84286 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-84286 weaknesses.
Official Sources and Advisories
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