Is CVE-2025-35434 in the CISA KEV catalog?

No. CVE-2025-35434 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-35434?

CVE-2025-35434 has a CVSS v3 base score of 4.2 (MEDIUM).

What is the EPSS score for CVE-2025-35434?

CVE-2025-35434 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-35434?

Upgrade thorium to 1.1.2 or later.

CVE & CISA-KEV Catalog

CVE-2025-35434

MEDIUM

4.2

CVSS v3

NVD

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.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

thoriumNVD

Affected:< 1.1.2Fixed in:1.1.2CVE-2025-35434derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Vendor Advisory1

raw.githubusercontent.com

Third-Party Advisory1

cve.org

Release Notes1

github.com

Product1

github.com

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-09-23.