Vulnerability in Cisa Thorium
CVE-2025-35434
CISA Thorium does not validate TLS certificates when connecting to Elasticsearch. An unauthenticated attacker with access to a Thorium cluster could impersonate the Elasticsearch service. Fixed in 1.1.2.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Cisa Thorium — versions 1.0.0, 1.1.2
Weakness classification (CWE)
References
- 9119a7d8-5eab-497f-8521-727c672e3725 (Release Notes)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Product)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Third Party Advisory)
- 9119a7d8-5eab-497f-8521-727c672e3725 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-35434?
- CVE-2025-35434 is a medium-severity vulnerability in Cisa Thorium, classified under Improper Certificate Validation. CVSS score: 4.2/10. Published 2025-09-17.
- How severe is CVE-2025-35434?
- Medium severity. CVSS v3 base score is 4.2 out of 10.