{"id":"CVE-2026-88839","title":"BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.","summary":"BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.","severity":"medium","cvss":6.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"Red Hat","product":"busybox","affected":["busybox (all versions)"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T20:17:20.863","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88839","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-88839","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531353","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88839.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88839"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88839"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-23T19:19:09.117423Z"},"ingestedAt":"2026-09-23T18:29:33.146Z","slug":"CVE-2026-88839","body":"## Overview\n\nBusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images · no fix planned: Red Hat Hardened Images · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88839.json)","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":36.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}