{"id":"CVE-2026-123200","aliases":["EUVD-2026-117645","GHSA-x3v7-qh5m-v37c"],"status":"published","title":"VRPN through 07.36 Out-of-bounds Write via SENDER_DESCRIPTION/TYPE_DESCRIPTION length index","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00446,"percentile":0.39243,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-129"],"published":"2026-11-05T18:16:37Z","modified":"2026-11-05T21:34:51Z","products":[{"vendor":"vrpn","product":"vrpn"}],"references":[{"url":"https://github.com/vrpn/vrpn/commit/0da5b0b71e06e8c318a4e674c84caee12251a782","tags":["patch","fix"]},{"url":"https://github.com/vrpn/vrpn/commit/c893b583d928fd17d756b39271b2eae71766e7f2","tags":["patch","fix"]},{"url":"https://github.com/vrpn/vrpn/blob/79deb000cc0b47ae49a80c92c78167c02d8a04d8/vrpn_Connection.C#L4554","tags":["technical-description","article"]},{"url":"https://github.com/vrpn/vrpn/blob/79deb000cc0b47ae49a80c92c78167c02d8a04d8/vrpn_Connection.C#L4482","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/vrpn-through-07.36-out-of-bounds-write-via-sender-description-type-description-length-index","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123200","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x3v7-qh5m-v37c"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123200.json","tags":["advisory"]},{"url":"https://github.com/vrpn/vrpn","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-123200","title":"VRPN through 07.36 Out-of-bounds Write via SENDER_DESCRIPTION/TYPE_DESCRIPTION length index","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","status":"published","published":"2026-11-05T18:16:37.053Z","modified":"2026-11-09T17:45:43.758Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-129"],"updated_at":"2026-11-09T19:34:28.960398Z"}],"euvd":[{"id":"EUVD-2026-117645","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","status":"published","published":"2026-11-05T18:16:37Z","modified":"2026-11-09T17:45:43Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-09T19:17:50.030863Z"}],"ghsa":[{"id":"GHSA-x3v7-qh5m-v37c","title":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint:...","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","status":"published","published":"2026-11-05T21:34:50Z","modified":"2026-11-05T21:34:51Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-129"],"updated_at":"2026-11-05T21:56:36.974002Z"}],"nvd":[{"id":"CVE-2026-123200","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","status":"published","published":"2026-11-05T19:17:18.953Z","modified":"2026-11-09T18:17:24.19Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-129"],"updated_at":"2026-11-09T20:15:34.274131Z"}],"osv":[{"id":"CVE-2026-123200","title":"VRPN through 07.36 Out-of-bounds Write via SENDER_DESCRIPTION/TYPE_DESCRIPTION length index","description":"VRPN through 07.36 contains an out-of-bounds stack write vulnerability in vrpn_Endpoint::handle_sender_message() and handle_type_message() that allows unauthenticated remote peers to write outside a stack buffer via an unchecked length index. Attackers can connect, complete the version-cookie exchange, and send a SENDER_DESCRIPTION or TYPE_DESCRIPTION message with an out-of-range or negative index to crash the process.","status":"published","published":"2026-11-05T18:16:37.053Z","modified":"2026-11-11T02:31:03.839375675Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-129"],"updated_at":"2026-11-07T03:08:01.726202Z"}]}}