CVE-2025-35435

MEDIUM

Published Sep 17, 2025 Modified Sep 26, 2025 CWE-369

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.

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CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-369 CWE-369

Affected Products

Vendor	Product	Versions
cisa	thorium	< 1.1.2

References

Advisories & Patches

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json

Other References

https://github.com/cisagov/thorium/commit/7c94a0b9bc2dc55e0c307360452f348bac06820c https://www.cve.org/CVERecord?id=CVE-2025-CVE-2025-35435

Frequently Asked Questions

What is CVE-2025-35435? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-35435? +

CVE-2025-35435 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-35435? +

CVE-2025-35435 affects products from cisa, specifically: thorium. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-35435? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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