{"id":"CVE-2026-95509","aliases":["EUVD-2026-88732","GHSA-5q52-pjpv-x8mh"],"status":"published","title":"Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs","description":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00312,"percentile":0.24331,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125","CWE-131"],"published":"2026-09-29T10:40:12Z","modified":"2026-09-30T16:30:42Z","products":[{"vendor":"qt","product":"qt for mcus"}],"references":[{"url":"https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-95509:","tags":["issue-tracking"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95509"},{"url":"https://github.com/advisories/GHSA-5q52-pjpv-x8mh"}],"sources":{"cve":[{"id":"CVE-2026-95509","title":"Out-of-bounds read vulnerability in string formatting impacts Qt for MCUs","description":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.","status":"published","published":"2026-09-29T10:40:12.578Z","modified":"2026-09-29T15:02:15.87Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-125","CWE-131"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-88732","description":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.","status":"published","published":"2026-09-29T10:40:12Z","modified":"2026-09-29T15:02:15Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:52.331616Z"}],"ghsa":[{"id":"GHSA-5q52-pjpv-x8mh","title":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg()...","description":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.","status":"published","published":"2026-09-29T12:31:31Z","modified":"2026-09-29T12:31:39Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:12:33.186319Z"}],"nvd":[{"id":"CVE-2026-95509","description":"Strings optimized for Latin-1 displaying Latin-1 characters cause incorrect String.arg() formatting by an incorrect buffer size calculation, causing out-of-bounds reading.","status":"published","published":"2026-09-29T11:16:43.947Z","modified":"2026-09-30T16:30:42.327Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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"}],"cwes":["CWE-125","CWE-131"],"updated_at":"2026-11-02T14:12:52.413234Z"}]}}