{"id":"CVE-2026-88840","aliases":["DEBIAN-CVE-2026-88840","EUVD-2026-85513","GHSA-w878-vhh4-m5pv","UBUNTU-CVE-2026-88840"],"status":"published","title":"Busybox: busybox: tls ssl_server reads one byte out of bounds when parsing truncated clienthello","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello 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hat","product":"red hat hardened images"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-88840","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531354","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88840"},{"url":"https://github.com/advisories/GHSA-w878-vhh4-m5pv"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-88840","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-88840","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88840","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-88840","title":"Busybox: busybox: tls ssl_server reads one byte out of bounds when parsing truncated clienthello","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T17:45:34.724Z","modified":"2026-09-26T22:51:21.731Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-85513","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T17:45:34Z","modified":"2026-09-26T22:51:21Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:27:54.286776Z"}],"ghsa":[{"id":"GHSA-w878-vhh4-m5pv","title":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated...","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T18:31:58Z","modified":"2026-09-23T18:32:06Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:12:21.120874Z"}],"nvd":[{"id":"CVE-2026-88840","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T18:17:10.79Z","modified":"2026-09-26T23:16:38.49Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:50.703874Z"}],"osv":[{"id":"DEBIAN-CVE-2026-88840","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T18:17:10.79Z","modified":"2026-09-27T08:47:23.378706602Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:46:05.506112Z"},{"id":"UBUNTU-CVE-2026-88840","description":"BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.","status":"published","published":"2026-09-23T18:17:00Z","modified":"2026-10-17T13:01:15.749528335Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:24.828975Z"}]}}