{"id":"CVE-2025-62858","aliases":["EUVD-2025-210082","GHSA-prxr-642c-c266"],"status":"published","title":"QTS, QuTS hero","description":"A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later","severity":{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00445,"percentile":0.39004,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-06-09T06:17:30Z","modified":"2026-07-23T08:10:00Z","products":[{"vendor":"qnap","product":"qts"},{"vendor":"qnap","product":"quts_hero"},{"vendor":"qnap systems inc.","product":"qts"},{"vendor":"qnap systems inc.","product":"quts hero"}],"references":[{"url":"https://www.qnap.com/en/security-advisory/qsa-26-10","tags":["Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62858"},{"url":"https://github.com/advisories/GHSA-prxr-642c-c266"}],"sources":{"cve":[{"id":"CVE-2025-62858","title":"QTS, QuTS hero","description":"A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later","status":"published","published":"2026-06-09T06:17:30.787Z","modified":"2026-06-09T13:11:28.903Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:32:55.19484Z"}],"euvd":[{"id":"EUVD-2025-210082","description":"A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later","status":"published","published":"2026-06-09T06:17:30Z","modified":"2026-06-09T13:11:28Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:48.012898Z"}],"ghsa":[{"id":"GHSA-prxr-642c-c266","title":"A buffer overflow vulnerability has been reported to affect several QNAP operating system...","description":"A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later","status":"published","published":"2026-06-09T09:32:06Z","modified":"2026-06-12T18:32:50Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","level":"medium"},{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:08:45.184845Z"}],"nvd":[{"id":"CVE-2025-62858","description":"A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.9.3410 build 20260214 and later\nQuTS hero h5.2.9.3410 build 20260214 and later\nQuTS hero h5.3.4.3500 build 20260520 and later\nQuTS hero h6.0.0.3397 build 20260206 and later","status":"published","published":"2026-06-09T08:16:26.503Z","modified":"2026-07-23T08:10:00.137Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:02.535029Z"}]}}