VDB
CVE-2026-16839
CVE-2026-16839
PUBLISHED
CVSS 9.4 CRITICAL
Reported by ibm · Published August 19, 2026
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to obtain sensitive information due to an integer underflow in the IPv4 IP-options parser.
Risk Scores
CVSS 3.1
9.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| IBM | AIX | 7.2, 7.3 |
| IBM | PowerVM VIOS | 4.1 |
| IBM | AIX | 7.2, 7.3, 7.2 |
| IBM | PowerVM VIOS | 4.1, 4.1 |
Timeline
- Aug 15, 2026 CVE Published
- Aug 22, 2026 Coalition ESS Score