{"id":"CVE-2025-6703","summary":"transport/fc.rs: panic attempting to send MAX_DATA with value larger max varint","details":"Improper Input Validation vulnerability in Mozilla neqo leads to an unexploitable crash..This issue affects neqo: from 0.4.24 through 0.13.2.","aliases":["GHSA-jfv6-x22w-grhf"],"modified":"2026-08-12T03:51:10.227535769Z","published":"2025-06-26T09:30:03.893Z","database_specific":{"cna_assigner":"mozilla","cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6703.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6703.json"},{"type":"ADVISORY","url":"https://github.com/mozilla/neqo/security/advisories/GHSA-jfv6-x22w-grhf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6703"},{"type":"PACKAGE","url":"https://github.com/mozilla/neqo"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mozilla/neqo","events":[{"introduced":"9ac8581e2df27f2e5b03abeba923dad1a7b9f6c4"},{"last_affected":"847a5989f20d30eb3675d1435180fd48a8c6a3ad"}],"database_specific":{"cpe":"cpe:2.3:a:mozilla:neqo:*:*:*:*:*:rust:*:*","extracted_events":[{"introduced":"0.4.24"},{"last_affected":"0.13.2"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v0.13.2","v0.13.1","v0.13.0","v0.12.2","v0.12.1","v0.12.0","v0.11.0","v0.10.0","v0.9.2","v0.9.1","v0.9.0","v0.8.1","v0.8.0","v0.7.9","v0.7.8","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.9","v0.6.8","v0.6.7","v0.6.6","v0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.7","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.32","v0.4.31","v0.4.30","v0.4.29","v0.4.28","v0.4.27","v0.4.26","v0.4.25","v0.4.24"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6703.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/R:A/RE:L/U:Clear"}]}