CISA Thorium accepts a stream split size of zero then divides by this value. A remote, authenticated attacker could cause the service to crash. Fixed in commit 89101a6.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00141.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cisa Subscribe
Thorium Subscribe

Configuration 1 [-]

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

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Cisa Subscribe
Thorium Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2025-29733 CISA Thorium accepts a stream split size of zero then divides by this value. A remote, authenticated attacker could cause the service to crash. Fixed in commit 89101a6.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/cisagov/thorium/commit/7c94a0b9bc2dc55e0c307360452f348bac06820c cve-icon cve-icon
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-CVE-2025-35435 cve-icon cve-icon
History

Tue, 30 Sep 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 26 Sep 2025 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:cisa:thorium:*:*:*:*:*:*:*:*

Thu, 18 Sep 2025 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisa
Cisa thorium
Vendors & Products Cisa
Cisa thorium

Wed, 17 Sep 2025 17:00:00 +0000

Type Values Removed Values Added
Description CISA Thorium accepts a stream split size of zero then divides by this value. A remote, authenticated attacker could cause the service to crash. Fixed in commit 89101a6.
Title CISA Thorium download stream divide by zero
Weaknesses CWE-369
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisa-cg

Published:

Updated: 2025-09-30T16:35:00.970Z

Reserved: 2025-04-15T20:57:14.281Z

Link: CVE-2025-35435

cve-icon Vulnrichment

Updated: 2025-09-30T16:34:56.912Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-17T17:15:43.880

Modified: 2025-09-26T14:39:46.340

Link: CVE-2025-35435

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-18T12:41:07Z

Weaknesses