How severe is CVE-2025-35430?

CVE-2025-35430 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-35430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-35430?

CVE-2025-35430 affects Cisa Thorium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-35430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-35430 have an EU (EUVD) identifier?

Yes. CVE-2025-35430 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29738.

When was CVE-2025-35430 published?

CVE-2025-35430 was published on 2025-09-17 and last updated on 2026-06-17.

CVE-2025-35430

CVE-2025-35430 is a medium-severity vulnerability in Cisa Thorium with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v4: 5.3
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29738
Weakness: CWE-22
Affected product: Cisa Thorium
Published: 2025-09-17
Last modified: 2026-06-17

Description

CISA Thorium does not adequately validate the paths of downloaded files via 'download_ephemeral' and 'download_children'. A remote, authenticated attacker could access arbitrary files subject to file system permissions. Fixed in 1.1.2.

Frequently asked questions

What is CVE-2025-35430?: CISA Thorium does not adequately validate the paths of downloaded files via 'download_ephemeral' and 'download_children'. A remote, authenticated attacker could access arbitrary files subject to file system permissions. Fixed in 1.1.2.
How severe is CVE-2025-35430?: CVE-2025-35430 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-35430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-35430?: CVE-2025-35430 affects Cisa Thorium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-35430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-35430 have an EU (EUVD) identifier?: Yes. CVE-2025-35430 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29738.
When was CVE-2025-35430 published?: CVE-2025-35430 was published on 2025-09-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisa:thorium:*:*:*:*:*:*:*:*

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