{"id":"CVE-2026-16821","aliases":["EUVD-2026-67948","GHSA-6rjg-22x4-mfvp"],"status":"published","title":"Vulnerabilities in IBM AIX and PowerVM VIOS","description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00131,"percentile":0.02763,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-134"],"published":"2026-08-28T20:43:04Z","modified":"2026-09-02T14:01:34Z","products":[{"vendor":"ibm","product":"aix"},{"vendor":"ibm","product":"powervm vios"},{"vendor":"ibm","product":"vios"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7283858","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16821"},{"url":"https://github.com/advisories/GHSA-6rjg-22x4-mfvp"}],"sources":{"cve":[{"id":"CVE-2026-16821","title":"Vulnerabilities in IBM AIX and PowerVM VIOS","description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.","status":"published","published":"2026-08-28T20:43:04.351Z","modified":"2026-09-01T03:56:23.159Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:20:11.24076Z"}],"euvd":[{"id":"EUVD-2026-67948","description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.","status":"published","published":"2026-08-28T20:43:04Z","modified":"2026-09-01T03:56:23Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:19.285273Z"}],"ghsa":[{"id":"GHSA-6rjg-22x4-mfvp","title":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated...","description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.","status":"published","published":"2026-08-29T00:31:01Z","modified":"2026-08-29T00:31:05Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T15:11:08.705354Z"}],"nvd":[{"id":"CVE-2026-16821","description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.","status":"published","published":"2026-08-28T22:16:46.31Z","modified":"2026-09-02T14:01:34.853Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:12:42.366888Z"}]}}