CVE-2025-35434CRITICAL 9.8EPSS p9.0%

CVE-2025-35434CVE-2025-35434

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.20% probability of exploitation · percentile 9.0% · 2026-10-05T12:00:23Z
Published2025-09-17
Last modified2025-09-23

Underlying weaknesses· 1

CWE-295

References

  1. https://github.com/cisagov/thorium/blob/main/api/src/models/backends/setup/elastic_setup.rs#L36-L43
  2. https://github.com/cisagov/thorium/releases/tag/1.1.2
  3. https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json
  4. https://www.cve.org/CVERecord?id=CVE-2025-35434

1

TypeTargetConfidenceTier
WeaknessImproper Certificate Validationcwe-2950%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.