Threats Tagged 'cve-2026-18821'
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Threats Tagged 'cve-2026-18821'
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CVE-2026-18821 is a high-severity vulnerability in IBM PowerVM Hypervisor firmware affecting partitions during network boot. An unauthenticated attacker on the same network can send a malformed packet to a partition undergoing network boot, leading to arbitrary code execution within that partition's firmware. This compromises the confidentiality, integrity, and availability of the affected partition and everything it subsequently loads. Other partitions and the managed system remain unaffected. The vulnerability is related to an out-of-bounds write (CWE-787) in the partition firmware. Join the discussion | CVE Database V5 | 08/19/2026, 19:41:43 UTC Added: 08/20/2026, 11:11:52 UTC |
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