Azure HDInsight Jupyter Notebook Spoofing Vulnerability
Conclusion & alert: CVE-2023-35394 is rated Low Risk (38.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.93%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.20% | 0.93% | +0.73% |
| 2 | 2025-11-21 | 1.08% | 0.20% | -0.88% |
| 3 | 2025-11-18 | — | 1.08% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.6 | 3.1 | MEDIUM |
|
2.1 | 2.5 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2023-35394 medium priority: Ubuntu including 3 source packages (jupyter-core, jupyter-notebook, notebook), 30 status rows across 10 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, trusty, upstream, xenial): not-affected 15, ignored 9, DNE 6. | https://ubuntu.com/security/CVE-2023-35394 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | azure_hdinsight | — | cpe:2.3:a:microsoft:azure_hdinsight:-:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35394 | Patch Vendor Advisory |