Divide by Zero in ollama/ollama
Priority HIGH 72CWE-369Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-369.
Summary
A divide by zero vulnerability exists in ollama/ollama version v0.3.3. The vulnerability occurs when importing GGUF models with a crafted type for `block_count` in the Modelfile. This can lead to a denial of service (DoS) condition when the server processes the model, causing it to crash.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00643 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ollama | ollama/ollama | up to latest | — | No fix listed | CNA |
| — | github.com/ollama/ollama (Go) | up to 0.3.3 | — | No fix listed | GHSA-2xf2-gjm6-g2c6 |
- ollama/ollama Vendorollama Affected up to latest Fixed in — No fix listed CNA
- github.com/ollama/ollama (Go) Vendor— Affected up to 0.3.3 Fixed in — No fix listed GHSA-2xf2-gjm6-g2c6
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Ansible Automation Platform 2
Timeline
- 2026-10-02 Threatist record created from CVE-2024-8063
- 2026-10-03 Alias added: GHSA-2xf2-gjm6-g2c6
- 2026-10-21 EPSS moved to the 50th–90th percentile
References
More Ollama vulnerabilities
- TI-2024-24572 Ollama before 0.1.34 does not validate the format of the digest (sha256 with 64 hex… CVSS 3.1HIGH 8.8
- TI-2025-14153 Ollama Multi-Modal Model Image Processing NULL Pointer Dereference CVSS 4.0HIGH 8.7
- TI-2024-26641 An issue was discovered in Ollama before 0.1.46. CVSS 3.1HIGH 8.2
- TI-2025-41098 An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via… CVSS 3.1HIGH 7.5
- TI-2025-41097 An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoder CVSS 3.1HIGH 7.5
- TI-2025-01720 Improper Validation of Array Index in ollama/ollama CVSS 3.0HIGH 7.5
Sources
- CVE-2024-8063 · CVE Program
- CVE-2024-8063 · NVD
- FIRST EPSS
- GHSA-2xf2-gjm6-g2c6 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-8063 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences