IBM disclosed CVE-2026-16841, a high-severity stack buffer overflow in AIX 7.2, 7.3 and PowerVM VIOS 4.1 that could allow remote arbitrary code execution with a CVSS score of 8.8. The flaw, published August 19 2026, requires prompt patching on affected enterprise Unix and virtualization platforms. Direct NVD page not yet surfaced in searches; support page referenced in related IBM AIX CVE reports.
A stack buffer overflow enables remote code execution.
It stems from a stack buffer overflow that a remote attacker could exploit.
Enterprise users of AIX and PowerVM should treat this CVSS 8.8 remote code execution flaw as urgent given the low complexity and high impact vector.
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