{"id":"CVE-2025-35435","aliases":["EUVD-2025-29733","GHSA-w2x7-fc9j-4572"],"status":"published","title":"CISA Thorium download stream divide by zero","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.","severity":{"version":"4.0","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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00435,"percentile":0.38243,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-369"],"published":"2025-09-17T16:53:22Z","modified":"2026-10-28T02:30:34Z","products":[{"vendor":"cisa","product":"thorium"}],"references":[{"url":"https://github.com/cisagov/thorium/commit/7c94a0b9bc2dc55e0c307360452f348bac06820c","tags":["Product","fix"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-CVE-2025-35435","tags":["Third Party Advisory","web"]},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json","tags":["Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-35435","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-w2x7-fc9j-4572"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/35xxx/CVE-2025-35435.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-35435","title":"CISA Thorium download stream divide by zero","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.","status":"published","published":"2025-09-17T16:53:22.388Z","modified":"2025-09-30T16:35:00.97Z","cvss":[{"version":"4.0","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","level":"medium","assessor":"cna"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:32:51.199669Z"}],"euvd":[{"id":"EUVD-2025-29733","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.","status":"published","published":"2025-09-17T16:53:22Z","modified":"2025-09-30T16:35:00Z","cvss":[{"version":"4.0","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","level":"medium"}],"updated_at":"2026-11-02T20:31:37.600422Z"}],"ghsa":[{"id":"GHSA-w2x7-fc9j-4572","title":"CISA Thorium accepts a stream split size of zero then divides by this value. A remote,...","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.","status":"published","published":"2025-09-17T18:31:18Z","modified":"2025-09-17T18:31:25Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T15:03:38.691888Z"}],"nvd":[{"id":"CVE-2025-35435","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.","status":"published","published":"2025-09-17T17:15:43.88Z","modified":"2026-06-17T09:14:17.71Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:11:29.650057Z"}],"osv":[{"id":"CVE-2025-35435","title":"CISA Thorium download stream divide by zero","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.","status":"published","published":"2025-09-17T16:53:22.388Z","modified":"2026-10-28T02:30:34.013610401Z","cvss":[{"version":"4.0","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","level":"medium"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T15:44:48.02508Z"}]}}